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8-Hour Ozone (1997) Designated Areas by State/County/Area - NAAQS Revoked
8-Hour Ozone (1997) Designated Areas by State/County/Area - NAAQS Revoked
Data is current as of September 30, 2024The 1997 8-hour Ozone NAAQS was revoked effective April 6, 2015 (80 FR 12264).
Click underlined column heading to change report order
| State | County | Area Name | Current Status | County NA Whole/Part |
2010 Population |
State/ County FIPS |
|---|---|---|---|---|---|---|
| click link for partial county description |
whole or partial county population |
|||||
| ALABAMA | Jefferson County | Birmingham, AL | Maintenance | Whole | 658,466 | 01/073 |
| ALABAMA | Shelby County | Birmingham, AL | Maintenance | Whole | 195,085 | 01/117 |
| ARIZONA | Maricopa County | Phoenix-Mesa, AZ | Maintenance | Part | 3,801,700 | 04/013 |
| ARIZONA | Pinal County | Phoenix-Mesa, AZ | Maintenance | Part | 46,927 | 04/021 |
| ARKANSAS | Crittenden County | Memphis, TN-AR | Maintenance | Whole | 50,902 | 05/035 |
| CALIFORNIA | Alameda County | San Francisco Bay Area, CA | Nonattainment | Whole | 1,510,271 | 06/001 |
| CALIFORNIA | Amador County | Amador and Calaveras Cos. (Central Mountain Cos.), CA | Nonattainment | Whole | 38,091 | 06/005 |
| CALIFORNIA | Butte County | Chico, CA | Nonattainment | Whole | 220,000 | 06/007 |
| CALIFORNIA | Calaveras County | Amador and Calaveras Cos. (Central Mountain Cos.), CA | Nonattainment | Whole | 45,578 | 06/009 |
| CALIFORNIA | Contra Costa County | San Francisco Bay Area, CA | Nonattainment | Whole | 1,049,025 | 06/013 |
| CALIFORNIA | El Dorado County | Sacramento Metro, CA | Nonattainment | Part | 151,823 | 06/017 |
| CALIFORNIA | Fresno County | San Joaquin Valley, CA | Nonattainment | Whole | 930,450 | 06/019 |
| CALIFORNIA | Imperial County | Imperial County, CA | Nonattainment | Whole | 174,528 | 06/025 |
| CALIFORNIA | Kern County | Kern County (Eastern Kern), CA | Nonattainment | Part | 95,314 | 06/029 |
| CALIFORNIA | Kern County | San Joaquin Valley, CA | Nonattainment | Part | 710,558 | 06/029 |
| CALIFORNIA | Kings County | San Joaquin Valley, CA | Nonattainment | Whole | 152,982 | 06/031 |
| CALIFORNIA | Los Angeles County | Los Angeles and San Bernardino Counties (Western Mojave Desert), CA | Nonattainment | Part | 378,570 | 06/037 |
| CALIFORNIA | Los Angeles County | Los Angeles-South Coast Air Basin, CA | Nonattainment | Part | 9,441,036 | 06/037 |
| CALIFORNIA | Madera County | San Joaquin Valley, CA | Nonattainment | Whole | 150,865 | 06/039 |
| CALIFORNIA | Marin County | San Francisco Bay Area, CA | Nonattainment | Whole | 252,409 | 06/041 |
| CALIFORNIA | Mariposa County | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | Nonattainment | Whole | 18,251 | 06/043 |
| CALIFORNIA | Merced County | San Joaquin Valley, CA | Nonattainment | Whole | 255,793 | 06/047 |
| CALIFORNIA | Napa County | San Francisco Bay Area, CA | Nonattainment | Whole | 136,484 | 06/055 |
| CALIFORNIA | Nevada County | Nevada County (Western part), CA | Nonattainment | Part | 82,393 | 06/057 |
| CALIFORNIA | Orange County | Los Angeles-South Coast Air Basin, CA | Nonattainment | Whole | 3,010,232 | 06/059 |
| CALIFORNIA | Placer County | Sacramento Metro, CA | Nonattainment | Part | 339,500 | 06/061 |
| CALIFORNIA | Riverside County | Los Angeles-South Coast Air Basin, CA | Nonattainment | Part | 1,737,296 | 06/065 |
| CALIFORNIA | Riverside County | Morongo Band of Mission Indians, CA | Nonattainment | Part | 913 | 06/065 |
| CALIFORNIA | Riverside County | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | Maintenance | Part | 2,730 | 06/065 |
| CALIFORNIA | Riverside County | Riverside County (Coachella Valley), CA | Nonattainment | Part | 425,425 | 06/065 |
| CALIFORNIA | Sacramento County | Sacramento Metro, CA | Nonattainment | Whole | 1,418,788 | 06/067 |
| CALIFORNIA | San Bernardino County | Los Angeles and San Bernardino Counties (Western Mojave Desert), CA | Nonattainment | Part | 489,780 | 06/071 |
| CALIFORNIA | San Bernardino County | Los Angeles-South Coast Air Basin, CA | Nonattainment | Part | 1,526,620 | 06/071 |
| CALIFORNIA | San Diego County | Pechanga Band of Luiseno Mission Indians of the Pechanga Reservation, CA | Maintenance | Part | 114 | 06/073 |
| CALIFORNIA | San Diego County | San Diego, CA | Maintenance | Part | 3,093,345 | 06/073 |
| CALIFORNIA | San Francisco County | San Francisco Bay Area, CA | Nonattainment | Whole | 805,235 | 06/075 |
| CALIFORNIA | San Joaquin County | San Joaquin Valley, CA | Nonattainment | Whole | 685,306 | 06/077 |
| CALIFORNIA | San Mateo County | San Francisco Bay Area, CA | Nonattainment | Whole | 718,451 | 06/081 |
| CALIFORNIA | Santa Clara County | San Francisco Bay Area, CA | Nonattainment | Whole | 1,781,642 | 06/085 |
| CALIFORNIA | Solano County | Sacramento Metro, CA | Nonattainment | Part | 129,518 | 06/095 |
| CALIFORNIA | Solano County | San Francisco Bay Area, CA | Nonattainment | Part | 284,218 | 06/095 |
| CALIFORNIA | Sonoma County | San Francisco Bay Area, CA | Nonattainment | Part | 433,262 | 06/097 |
| CALIFORNIA | Stanislaus County | San Joaquin Valley, CA | Nonattainment | Whole | 514,453 | 06/099 |
| CALIFORNIA | Sutter County | Sacramento Metro, CA | Nonattainment | Part | 3,433 | 06/101 |
| CALIFORNIA | Sutter County | Sutter County (part) (Sutter Buttes), CA | Nonattainment | Part | 33 | 06/101 |
| CALIFORNIA | Tulare County | San Joaquin Valley, CA | Nonattainment | Whole | 442,179 | 06/107 |
| CALIFORNIA | Tuolumne County | Mariposa and Tuolumne Cos. (Southern Mountain Counties), CA | Nonattainment | Whole | 55,365 | 06/109 |
| CALIFORNIA | Ventura County | Ventura County (part), CA | Nonattainment | Part | 823,360 | 06/111 |
| CALIFORNIA | Yolo County | Sacramento Metro, CA | Nonattainment | Whole | 200,849 | 06/113 |
| COLORADO | Adams County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 441,603 | 08/001 |
| COLORADO | Arapahoe County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 572,003 | 08/005 |
| COLORADO | Boulder County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 294,567 | 08/013 |
| COLORADO | Broomfield County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 55,889 | 08/014 |
| COLORADO | Denver County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 600,158 | 08/031 |
| COLORADO | Douglas County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 285,465 | 08/035 |
| COLORADO | Jefferson County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Whole | 534,543 | 08/059 |
| COLORADO | Larimer County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Part | 294,389 | 08/069 |
| COLORADO | Weld County | Denver-Boulder-Greeley-Ft. Collins-Loveland, CO | Nonattainment | Part | 251,522 | 08/123 |
| CONNECTICUT | Fairfield County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 916,829 | 09/001 |
| CONNECTICUT | Hartford County | Greater Connecticut, CT | Nonattainment | Whole | 894,014 | 09/003 |
| CONNECTICUT | Litchfield County | Greater Connecticut, CT | Nonattainment | Whole | 189,927 | 09/005 |
| CONNECTICUT | Middlesex County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 165,676 | 09/007 |
| CONNECTICUT | New Haven County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 862,477 | 09/009 |
| CONNECTICUT | New London County | Greater Connecticut, CT | Nonattainment | Whole | 274,055 | 09/011 |
| CONNECTICUT | Tolland County | Greater Connecticut, CT | Nonattainment | Whole | 152,691 | 09/013 |
| CONNECTICUT | Windham County | Greater Connecticut, CT | Nonattainment | Whole | 118,428 | 09/015 |
| DELAWARE | Kent County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 162,310 | 10/001 |
| DELAWARE | New Castle County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 538,479 | 10/003 |
| DELAWARE | Sussex County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 197,145 | 10/005 |
| DISTRICT OF COLUMBIA | District of Columbia | Washington, DC-MD-VA | Nonattainment | Whole | 601,723 | 11/001 |
| GEORGIA | Barrow County | Atlanta, GA | Maintenance | Whole | 69,367 | 13/013 |
| GEORGIA | Bartow County | Atlanta, GA | Maintenance | Whole | 100,157 | 13/015 |
| GEORGIA | Bibb County | Macon, GA | Maintenance | Whole | 155,547 | 13/021 |
| GEORGIA | Carroll County | Atlanta, GA | Maintenance | Whole | 110,527 | 13/045 |
| GEORGIA | Cherokee County | Atlanta, GA | Maintenance | Whole | 214,346 | 13/057 |
| GEORGIA | Clayton County | Atlanta, GA | Maintenance | Whole | 259,424 | 13/063 |
| GEORGIA | Cobb County | Atlanta, GA | Maintenance | Whole | 688,078 | 13/067 |
| GEORGIA | Coweta County | Atlanta, GA | Maintenance | Whole | 127,317 | 13/077 |
| GEORGIA | DeKalb County | Atlanta, GA | Maintenance | Whole | 691,893 | 13/089 |
| GEORGIA | Douglas County | Atlanta, GA | Maintenance | Whole | 132,403 | 13/097 |
| GEORGIA | Fayette County | Atlanta, GA | Maintenance | Whole | 106,567 | 13/113 |
| GEORGIA | Forsyth County | Atlanta, GA | Maintenance | Whole | 175,511 | 13/117 |
| GEORGIA | Fulton County | Atlanta, GA | Maintenance | Whole | 920,581 | 13/121 |
| GEORGIA | Gwinnett County | Atlanta, GA | Maintenance | Whole | 805,321 | 13/135 |
| GEORGIA | Hall County | Atlanta, GA | Maintenance | Whole | 179,684 | 13/139 |
| GEORGIA | Henry County | Atlanta, GA | Maintenance | Whole | 203,922 | 13/151 |
| GEORGIA | Monroe County | Macon, GA | Maintenance | Part | 2,576 | 13/207 |
| GEORGIA | Murray County | Murray County (Chattahoochee Nat Forest), GA | Maintenance | Part | 6,231 | 13/213 |
| GEORGIA | Newton County | Atlanta, GA | Maintenance | Whole | 99,958 | 13/217 |
| GEORGIA | Paulding County | Atlanta, GA | Maintenance | Whole | 142,324 | 13/223 |
| GEORGIA | Rockdale County | Atlanta, GA | Maintenance | Whole | 85,215 | 13/247 |
| GEORGIA | Spalding County | Atlanta, GA | Maintenance | Whole | 64,073 | 13/255 |
| GEORGIA | Walton County | Atlanta, GA | Maintenance | Whole | 83,768 | 13/297 |
| ILLINOIS | Cook County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 5,194,675 | 17/031 |
| ILLINOIS | DuPage County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 916,924 | 17/043 |
| ILLINOIS | Grundy County | Chicago-Gary-Lake County, IL-IN | Maintenance | Part | 20,519 | 17/063 |
| ILLINOIS | Jersey County | St. Louis, MO-IL | Maintenance | Whole | 22,985 | 17/083 |
| ILLINOIS | Kane County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 515,269 | 17/089 |
| ILLINOIS | Kendall County | Chicago-Gary-Lake County, IL-IN | Maintenance | Part | 52,377 | 17/093 |
| ILLINOIS | Lake County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 703,462 | 17/097 |
| ILLINOIS | Madison County | St. Louis, MO-IL | Maintenance | Whole | 269,282 | 17/119 |
| ILLINOIS | McHenry County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 308,760 | 17/111 |
| ILLINOIS | Monroe County | St. Louis, MO-IL | Maintenance | Whole | 32,957 | 17/133 |
| ILLINOIS | St. Clair County | St. Louis, MO-IL | Maintenance | Whole | 270,056 | 17/163 |
| ILLINOIS | Will County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 677,560 | 17/197 |
| INDIANA | Allen County | Fort Wayne, IN | Maintenance | Whole | 355,329 | 18/003 |
| INDIANA | Boone County | Indianapolis, IN | Maintenance | Whole | 56,640 | 18/011 |
| INDIANA | Clark County | Louisville, KY-IN | Maintenance | Whole | 110,232 | 18/019 |
| INDIANA | Dearborn County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Part | 13,516 | 18/029 |
| INDIANA | Delaware County | Muncie, IN | Maintenance | Whole | 117,671 | 18/035 |
| INDIANA | Elkhart County | South Bend-Elkhart, IN | Maintenance | Whole | 197,559 | 18/039 |
| INDIANA | Floyd County | Louisville, KY-IN | Maintenance | Whole | 74,578 | 18/043 |
| INDIANA | Greene County | Greene County, IN | Maintenance | Whole | 33,165 | 18/055 |
| INDIANA | Hamilton County | Indianapolis, IN | Maintenance | Whole | 274,569 | 18/057 |
| INDIANA | Hancock County | Indianapolis, IN | Maintenance | Whole | 70,002 | 18/059 |
| INDIANA | Hendricks County | Indianapolis, IN | Maintenance | Whole | 145,448 | 18/063 |
| INDIANA | Jackson County | Jackson County, IN | Maintenance | Whole | 42,376 | 18/071 |
| INDIANA | Johnson County | Indianapolis, IN | Maintenance | Whole | 139,654 | 18/081 |
| INDIANA | LaPorte County | La Porte County, IN | Maintenance | Whole | 111,467 | 18/091 |
| INDIANA | Lake County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 496,005 | 18/089 |
| INDIANA | Madison County | Indianapolis, IN | Maintenance | Whole | 131,636 | 18/095 |
| INDIANA | Marion County | Indianapolis, IN | Maintenance | Whole | 903,393 | 18/097 |
| INDIANA | Morgan County | Indianapolis, IN | Maintenance | Whole | 68,894 | 18/109 |
| INDIANA | Porter County | Chicago-Gary-Lake County, IL-IN | Maintenance | Whole | 164,343 | 18/127 |
| INDIANA | Shelby County | Indianapolis, IN | Maintenance | Whole | 44,436 | 18/145 |
| INDIANA | St. Joseph County | South Bend-Elkhart, IN | Maintenance | Whole | 266,931 | 18/141 |
| INDIANA | Vanderburgh County | Evansville, IN | Maintenance | Whole | 179,703 | 18/163 |
| INDIANA | Vigo County | Terre Haute, IN | Maintenance | Whole | 107,848 | 18/167 |
| INDIANA | Warrick County | Evansville, IN | Maintenance | Whole | 59,689 | 18/173 |
| KENTUCKY | Boone County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 118,811 | 21/015 |
| KENTUCKY | Boyd County | Huntington-Ashland, WV-KY | Maintenance | Whole | 49,542 | 21/019 |
| KENTUCKY | Bullitt County | Louisville, KY-IN | Maintenance | Whole | 74,319 | 21/029 |
| KENTUCKY | Campbell County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 90,336 | 21/037 |
| KENTUCKY | Christian County | Clarksville-Hopkinsville, TN-KY | Maintenance | Whole | 73,955 | 21/047 |
| KENTUCKY | Jefferson County | Louisville, KY-IN | Maintenance | Whole | 741,096 | 21/111 |
| KENTUCKY | Kenton County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 159,720 | 21/117 |
| KENTUCKY | Oldham County | Louisville, KY-IN | Maintenance | Whole | 60,316 | 21/185 |
| LOUISIANA | Ascension Parish | Baton Rouge, LA | Maintenance | Whole | 107,215 | 22/005 |
| LOUISIANA | East Baton Rouge Parish | Baton Rouge, LA | Maintenance | Whole | 440,171 | 22/033 |
| LOUISIANA | Iberville Parish | Baton Rouge, LA | Maintenance | Whole | 33,387 | 22/047 |
| LOUISIANA | Livingston Parish | Baton Rouge, LA | Maintenance | Whole | 128,026 | 22/063 |
| LOUISIANA | West Baton Rouge Parish | Baton Rouge, LA | Maintenance | Whole | 23,788 | 22/121 |
| MAINE | Androscoggin County | Portland, ME | Maintenance | Part | 5,132 | 23/001 |
| MAINE | Cumberland County | Portland, ME | Maintenance | Part | 267,207 | 23/005 |
| MAINE | Hancock County | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | Maintenance | Part | 32,894 | 23/009 |
| MAINE | Knox County | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | Maintenance | Part | 33,817 | 23/013 |
| MAINE | Lincoln County | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | Maintenance | Part | 29,803 | 23/015 |
| MAINE | Sagadahoc County | Portland, ME | Maintenance | Whole | 35,293 | 23/023 |
| MAINE | Waldo County | Hancock, Knox, Lincoln and Waldo Counties (Central Maine Coast), ME | Maintenance | Part | 751 | 23/027 |
| MAINE | York County | Portland, ME | Maintenance | Part | 174,009 | 23/031 |
| MARYLAND | Anne Arundel County | Baltimore, MD | Nonattainment | Whole | 537,656 | 24/003 |
| MARYLAND | Baltimore County | Baltimore, MD | Nonattainment | Whole | 805,029 | 24/005 |
| MARYLAND | Baltimore city | Baltimore, MD | Nonattainment | Whole | 620,961 | 24/510 |
| MARYLAND | Calvert County | Washington, DC-MD-VA | Nonattainment | Whole | 88,737 | 24/009 |
| MARYLAND | Carroll County | Baltimore, MD | Nonattainment | Whole | 167,134 | 24/013 |
| MARYLAND | Cecil County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 101,108 | 24/015 |
| MARYLAND | Charles County | Washington, DC-MD-VA | Nonattainment | Whole | 146,551 | 24/017 |
| MARYLAND | Frederick County | Washington, DC-MD-VA | Nonattainment | Whole | 233,385 | 24/021 |
| MARYLAND | Harford County | Baltimore, MD | Nonattainment | Whole | 244,826 | 24/025 |
| MARYLAND | Howard County | Baltimore, MD | Nonattainment | Whole | 287,085 | 24/027 |
| MARYLAND | Kent County | Kent and Queen Anne's Counties, MD | Maintenance | Whole | 20,197 | 24/029 |
| MARYLAND | Montgomery County | Washington, DC-MD-VA | Nonattainment | Whole | 971,777 | 24/031 |
| MARYLAND | Prince George's County | Washington, DC-MD-VA | Nonattainment | Whole | 863,420 | 24/033 |
| MARYLAND | Queen Anne's County | Kent and Queen Anne's Counties, MD | Maintenance | Whole | 47,798 | 24/035 |
| MASSACHUSETTS | Barnstable County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 215,888 | 25/001 |
| MASSACHUSETTS | Berkshire County | Springfield (W. Mass), MA | Nonattainment | Whole | 131,219 | 25/003 |
| MASSACHUSETTS | Bristol County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 548,285 | 25/005 |
| MASSACHUSETTS | Dukes County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 16,535 | 25/007 |
| MASSACHUSETTS | Essex County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 743,159 | 25/009 |
| MASSACHUSETTS | Franklin County | Springfield (W. Mass), MA | Nonattainment | Whole | 71,372 | 25/011 |
| MASSACHUSETTS | Hampden County | Springfield (W. Mass), MA | Nonattainment | Whole | 463,490 | 25/013 |
| MASSACHUSETTS | Hampshire County | Springfield (W. Mass), MA | Nonattainment | Whole | 158,080 | 25/015 |
| MASSACHUSETTS | Middlesex County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 1,503,085 | 25/017 |
| MASSACHUSETTS | Nantucket County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 10,172 | 25/019 |
| MASSACHUSETTS | Norfolk County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 670,850 | 25/021 |
| MASSACHUSETTS | Plymouth County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 494,919 | 25/023 |
| MASSACHUSETTS | Suffolk County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 722,023 | 25/025 |
| MASSACHUSETTS | Worcester County | Boston-Lawrence-Worcester (E. Mass), MA | Nonattainment | Whole | 798,552 | 25/027 |
| MICHIGAN | Allegan County | Allegan County, MI | Maintenance | Whole | 111,408 | 26/005 |
| MICHIGAN | Benzie County | Benzie County, MI | Maintenance | Whole | 17,525 | 26/019 |
| MICHIGAN | Berrien County | Benton Harbor, MI | Maintenance | Whole | 156,813 | 26/021 |
| MICHIGAN | Calhoun County | Kalamazoo-Battle Creek, MI | Maintenance | Whole | 136,146 | 26/025 |
| MICHIGAN | Cass County | Cass County, MI | Maintenance | Whole | 52,293 | 26/027 |
| MICHIGAN | Clinton County | Lansing-East Lansing, MI | Maintenance | Whole | 75,382 | 26/037 |
| MICHIGAN | Eaton County | Lansing-East Lansing, MI | Maintenance | Whole | 107,759 | 26/045 |
| MICHIGAN | Genesee County | Flint, MI | Maintenance | Whole | 425,790 | 26/049 |
| MICHIGAN | Huron County | Huron County, MI | Maintenance | Whole | 33,118 | 26/063 |
| MICHIGAN | Ingham County | Lansing-East Lansing, MI | Maintenance | Whole | 280,895 | 26/065 |
| MICHIGAN | Kalamazoo County | Kalamazoo-Battle Creek, MI | Maintenance | Whole | 250,331 | 26/077 |
| MICHIGAN | Kent County | Grand Rapids, MI | Maintenance | Whole | 602,622 | 26/081 |
| MICHIGAN | Lapeer County | Flint, MI | Maintenance | Whole | 88,319 | 26/087 |
| MICHIGAN | Lenawee County | Detroit-Ann Arbor, MI | Maintenance | Whole | 99,892 | 26/091 |
| MICHIGAN | Livingston County | Detroit-Ann Arbor, MI | Maintenance | Whole | 180,967 | 26/093 |
| MICHIGAN | Macomb County | Detroit-Ann Arbor, MI | Maintenance | Whole | 840,978 | 26/099 |
| MICHIGAN | Mason County | Mason County, MI | Maintenance | Whole | 28,705 | 26/105 |
| MICHIGAN | Monroe County | Detroit-Ann Arbor, MI | Maintenance | Whole | 152,021 | 26/115 |
| MICHIGAN | Muskegon County | Muskegon, MI | Maintenance | Whole | 172,188 | 26/121 |
| MICHIGAN | Oakland County | Detroit-Ann Arbor, MI | Maintenance | Whole | 1,202,362 | 26/125 |
| MICHIGAN | Ottawa County | Grand Rapids, MI | Maintenance | Whole | 263,801 | 26/139 |
| MICHIGAN | St. Clair County | Detroit-Ann Arbor, MI | Maintenance | Whole | 163,040 | 26/147 |
| MICHIGAN | Van Buren County | Kalamazoo-Battle Creek, MI | Maintenance | Whole | 76,258 | 26/159 |
| MICHIGAN | Washtenaw County | Detroit-Ann Arbor, MI | Maintenance | Whole | 344,791 | 26/161 |
| MICHIGAN | Wayne County | Detroit-Ann Arbor, MI | Maintenance | Whole | 1,820,584 | 26/163 |
| MISSOURI | Franklin County | St. Louis, MO-IL | Maintenance | Whole | 101,492 | 29/071 |
| MISSOURI | Jefferson County | St. Louis, MO-IL | Maintenance | Whole | 218,733 | 29/099 |
| MISSOURI | St. Charles County | St. Louis, MO-IL | Maintenance | Whole | 360,485 | 29/183 |
| MISSOURI | St. Louis County | St. Louis, MO-IL | Maintenance | Whole | 998,954 | 29/189 |
| MISSOURI | St. Louis city | St. Louis, MO-IL | Maintenance | Whole | 319,294 | 29/510 |
| NEVADA | Clark County | Las Vegas, NV | Maintenance | Part | 1,918,819 | 32/003 |
| NEW HAMPSHIRE | Hillsborough County | Boston-Manchester-Portsmouth (SE), NH | Maintenance | Part | 347,992 | 33/011 |
| NEW HAMPSHIRE | Merrimack County | Boston-Manchester-Portsmouth (SE), NH | Maintenance | Part | 15,013 | 33/013 |
| NEW HAMPSHIRE | Rockingham County | Boston-Manchester-Portsmouth (SE), NH | Maintenance | Part | 286,035 | 33/015 |
| NEW HAMPSHIRE | Strafford County | Boston-Manchester-Portsmouth (SE), NH | Maintenance | Part | 91,516 | 33/017 |
| NEW JERSEY | Atlantic County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 274,549 | 34/001 |
| NEW JERSEY | Bergen County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 905,116 | 34/003 |
| NEW JERSEY | Burlington County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 448,734 | 34/005 |
| NEW JERSEY | Camden County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 513,657 | 34/007 |
| NEW JERSEY | Cape May County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 97,265 | 34/009 |
| NEW JERSEY | Cumberland County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 156,898 | 34/011 |
| NEW JERSEY | Essex County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 783,969 | 34/013 |
| NEW JERSEY | Gloucester County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 288,288 | 34/015 |
| NEW JERSEY | Hudson County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 634,266 | 34/017 |
| NEW JERSEY | Hunterdon County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 128,349 | 34/019 |
| NEW JERSEY | Mercer County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 366,513 | 34/021 |
| NEW JERSEY | Middlesex County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 809,858 | 34/023 |
| NEW JERSEY | Monmouth County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 630,380 | 34/025 |
| NEW JERSEY | Morris County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 492,276 | 34/027 |
| NEW JERSEY | Ocean County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 576,567 | 34/029 |
| NEW JERSEY | Passaic County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 501,226 | 34/031 |
| NEW JERSEY | Salem County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 66,083 | 34/033 |
| NEW JERSEY | Somerset County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 323,444 | 34/035 |
| NEW JERSEY | Sussex County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 149,265 | 34/037 |
| NEW JERSEY | Union County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 536,499 | 34/039 |
| NEW JERSEY | Warren County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 108,692 | 34/041 |
| NEW YORK | Albany County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 304,204 | 36/001 |
| NEW YORK | Bronx County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 1,385,108 | 36/005 |
| NEW YORK | Chautauqua County | Jamestown, NY | Nonattainment | Whole | 134,905 | 36/013 |
| NEW YORK | Dutchess County | Poughkeepsie, NY | Nonattainment | Whole | 297,488 | 36/027 |
| NEW YORK | Erie County | Buffalo-Niagara Falls, NY | Nonattainment | Whole | 919,040 | 36/029 |
| NEW YORK | Essex County | Essex County (Whiteface Mtn.), NY | Nonattainment | Part | 465 | 36/031 |
| NEW YORK | Genesee County | Rochester, NY | Nonattainment | Whole | 60,079 | 36/037 |
| NEW YORK | Greene County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 49,221 | 36/039 |
| NEW YORK | Jefferson County | Jefferson County, NY | Nonattainment | Whole | 116,229 | 36/045 |
| NEW YORK | Kings County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 2,504,700 | 36/047 |
| NEW YORK | Livingston County | Rochester, NY | Nonattainment | Whole | 65,393 | 36/051 |
| NEW YORK | Monroe County | Rochester, NY | Nonattainment | Whole | 744,344 | 36/055 |
| NEW YORK | Montgomery County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 50,219 | 36/057 |
| NEW YORK | Nassau County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 1,339,532 | 36/059 |
| NEW YORK | New York County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 1,585,873 | 36/061 |
| NEW YORK | Niagara County | Buffalo-Niagara Falls, NY | Nonattainment | Whole | 216,469 | 36/063 |
| NEW YORK | Ontario County | Rochester, NY | Nonattainment | Whole | 107,931 | 36/069 |
| NEW YORK | Orange County | Poughkeepsie, NY | Nonattainment | Whole | 372,813 | 36/071 |
| NEW YORK | Orleans County | Rochester, NY | Nonattainment | Whole | 42,883 | 36/073 |
| NEW YORK | Putnam County | Poughkeepsie, NY | Nonattainment | Whole | 99,710 | 36/079 |
| NEW YORK | Queens County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 2,230,722 | 36/081 |
| NEW YORK | Rensselaer County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 159,429 | 36/083 |
| NEW YORK | Richmond County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 468,730 | 36/085 |
| NEW YORK | Rockland County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 311,687 | 36/087 |
| NEW YORK | Saratoga County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 219,607 | 36/091 |
| NEW YORK | Schenectady County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 154,727 | 36/093 |
| NEW YORK | Schoharie County | Albany-Schenectady-Troy, NY | Nonattainment | Whole | 32,749 | 36/095 |
| NEW YORK | Suffolk County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 1,493,350 | 36/103 |
| NEW YORK | Wayne County | Rochester, NY | Nonattainment | Whole | 93,772 | 36/117 |
| NEW YORK | Westchester County | New York-N. New Jersey-Long Island, NY-NJ-CT | Nonattainment | Whole | 949,113 | 36/119 |
| NORTH CAROLINA | Cabarrus County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 178,011 | 37/025 |
| NORTH CAROLINA | Chatham County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Part | 32,372 | 37/037 |
| NORTH CAROLINA | Durham County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 267,587 | 37/063 |
| NORTH CAROLINA | Edgecombe County | Rocky Mount, NC | Maintenance | Whole | 56,552 | 37/065 |
| NORTH CAROLINA | Franklin County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 60,619 | 37/069 |
| NORTH CAROLINA | Gaston County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 206,086 | 37/071 |
| NORTH CAROLINA | Granville County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 59,916 | 37/077 |
| NORTH CAROLINA | Haywood County | Haywood and Swain Counties (Great Smoky NP), NC | Maintenance | Part | 985 | 37/087 |
| NORTH CAROLINA | Iredell County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Part | 68,089 | 37/097 |
| NORTH CAROLINA | Johnston County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 168,878 | 37/101 |
| NORTH CAROLINA | Lincoln County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 78,265 | 37/109 |
| NORTH CAROLINA | Mecklenburg County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 919,628 | 37/119 |
| NORTH CAROLINA | Nash County | Rocky Mount, NC | Maintenance | Whole | 95,840 | 37/127 |
| NORTH CAROLINA | Orange County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 133,801 | 37/135 |
| NORTH CAROLINA | Person County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 39,464 | 37/145 |
| NORTH CAROLINA | Rowan County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 138,428 | 37/159 |
| NORTH CAROLINA | Swain County | Haywood and Swain Counties (Great Smoky NP), NC | Maintenance | Part | 3,288 | 37/173 |
| NORTH CAROLINA | Union County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Whole | 201,292 | 37/179 |
| NORTH CAROLINA | Wake County | Raleigh-Durham-Chapel Hill, NC | Maintenance | Whole | 900,993 | 37/183 |
| OHIO | Allen County | Lima, OH | Maintenance | Whole | 106,331 | 39/003 |
| OHIO | Ashtabula County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 101,497 | 39/007 |
| OHIO | Belmont County | Wheeling, WV-OH | Maintenance | Whole | 70,400 | 39/013 |
| OHIO | Butler County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 368,130 | 39/017 |
| OHIO | Clark County | Dayton-Springfield, OH | Maintenance | Whole | 138,333 | 39/023 |
| OHIO | Clermont County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 197,363 | 39/025 |
| OHIO | Clinton County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 42,040 | 39/027 |
| OHIO | Columbiana County | Youngstown-Warren-Sharon, OH-PA | Maintenance | Whole | 107,841 | 39/029 |
| OHIO | Cuyahoga County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 1,280,122 | 39/035 |
| OHIO | Delaware County | Columbus, OH | Maintenance | Whole | 174,214 | 39/041 |
| OHIO | Fairfield County | Columbus, OH | Maintenance | Whole | 146,156 | 39/045 |
| OHIO | Franklin County | Columbus, OH | Maintenance | Whole | 1,163,414 | 39/049 |
| OHIO | Geauga County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 93,389 | 39/055 |
| OHIO | Greene County | Dayton-Springfield, OH | Maintenance | Whole | 161,573 | 39/057 |
| OHIO | Hamilton County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 802,374 | 39/061 |
| OHIO | Jefferson County | Steubenville-Weirton, OH-WV | Maintenance | Whole | 69,709 | 39/081 |
| OHIO | Knox County | Columbus, OH | Maintenance | Whole | 60,921 | 39/083 |
| OHIO | Lake County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 230,041 | 39/085 |
| OHIO | Licking County | Columbus, OH | Maintenance | Whole | 166,492 | 39/089 |
| OHIO | Lorain County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 301,356 | 39/093 |
| OHIO | Lucas County | Toledo, OH | Maintenance | Whole | 441,815 | 39/095 |
| OHIO | Madison County | Columbus, OH | Maintenance | Whole | 43,435 | 39/097 |
| OHIO | Mahoning County | Youngstown-Warren-Sharon, OH-PA | Maintenance | Whole | 238,823 | 39/099 |
| OHIO | Medina County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 172,332 | 39/103 |
| OHIO | Miami County | Dayton-Springfield, OH | Maintenance | Whole | 102,506 | 39/109 |
| OHIO | Montgomery County | Dayton-Springfield, OH | Maintenance | Whole | 535,153 | 39/113 |
| OHIO | Portage County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 161,419 | 39/133 |
| OHIO | Stark County | Canton-Massillon, OH | Maintenance | Whole | 375,586 | 39/151 |
| OHIO | Summit County | Cleveland-Akron-Lorain, OH | Maintenance | Whole | 541,781 | 39/153 |
| OHIO | Trumbull County | Youngstown-Warren-Sharon, OH-PA | Maintenance | Whole | 210,312 | 39/155 |
| OHIO | Warren County | Cincinnati-Hamilton, OH-KY-IN | Maintenance | Whole | 212,693 | 39/165 |
| OHIO | Washington County | Parkersburg-Marietta, WV-OH | Maintenance | Whole | 61,778 | 39/167 |
| OHIO | Wood County | Toledo, OH | Maintenance | Whole | 125,488 | 39/173 |
| PENNSYLVANIA | Adams County | York, PA | Maintenance | Whole | 101,407 | 42/001 |
| PENNSYLVANIA | Allegheny County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 1,223,348 | 42/003 |
| PENNSYLVANIA | Armstrong County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 68,941 | 42/005 |
| PENNSYLVANIA | Beaver County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 170,539 | 42/007 |
| PENNSYLVANIA | Berks County | Reading, PA | Maintenance | Whole | 411,442 | 42/011 |
| PENNSYLVANIA | Blair County | Altoona, PA | Maintenance | Whole | 127,089 | 42/013 |
| PENNSYLVANIA | Bucks County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 625,249 | 42/017 |
| PENNSYLVANIA | Butler County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 183,862 | 42/019 |
| PENNSYLVANIA | Cambria County | Johnstown, PA | Maintenance | Whole | 143,679 | 42/021 |
| PENNSYLVANIA | Carbon County | Allentown-Bethlehem-Easton, PA | Maintenance | Whole | 65,249 | 42/025 |
| PENNSYLVANIA | Centre County | State College, PA | Maintenance | Whole | 153,990 | 42/027 |
| PENNSYLVANIA | Chester County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 498,886 | 42/029 |
| PENNSYLVANIA | Clearfield County | Clearfield and Indiana Counties, PA | Maintenance | Whole | 81,642 | 42/033 |
| PENNSYLVANIA | Cumberland County | Harrisburg-Lebanon-Carlisle, PA | Maintenance | Whole | 235,406 | 42/041 |
| PENNSYLVANIA | Dauphin County | Harrisburg-Lebanon-Carlisle, PA | Maintenance | Whole | 268,100 | 42/043 |
| PENNSYLVANIA | Delaware County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 558,979 | 42/045 |
| PENNSYLVANIA | Erie County | Erie, PA | Maintenance | Whole | 280,566 | 42/049 |
| PENNSYLVANIA | Fayette County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 136,606 | 42/051 |
| PENNSYLVANIA | Franklin County | Franklin County, PA | Maintenance | Whole | 149,618 | 42/055 |
| PENNSYLVANIA | Greene County | Greene County, PA | Maintenance | Whole | 38,686 | 42/059 |
| PENNSYLVANIA | Indiana County | Clearfield and Indiana Counties, PA | Maintenance | Whole | 88,880 | 42/063 |
| PENNSYLVANIA | Lackawanna County | Scranton-Wilkes-Barre, PA | Maintenance | Whole | 214,437 | 42/069 |
| PENNSYLVANIA | Lancaster County | Lancaster, PA | Maintenance | Whole | 519,445 | 42/071 |
| PENNSYLVANIA | Lebanon County | Harrisburg-Lebanon-Carlisle, PA | Maintenance | Whole | 133,568 | 42/075 |
| PENNSYLVANIA | Lehigh County | Allentown-Bethlehem-Easton, PA | Maintenance | Whole | 349,497 | 42/077 |
| PENNSYLVANIA | Luzerne County | Scranton-Wilkes-Barre, PA | Maintenance | Whole | 320,918 | 42/079 |
| PENNSYLVANIA | Mercer County | Youngstown-Warren-Sharon, OH-PA | Maintenance | Whole | 116,638 | 42/085 |
| PENNSYLVANIA | Monroe County | Scranton-Wilkes-Barre, PA | Maintenance | Whole | 169,842 | 42/089 |
| PENNSYLVANIA | Montgomery County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 799,874 | 42/091 |
| PENNSYLVANIA | Northampton County | Allentown-Bethlehem-Easton, PA | Maintenance | Whole | 297,735 | 42/095 |
| PENNSYLVANIA | Perry County | Harrisburg-Lebanon-Carlisle, PA | Maintenance | Whole | 45,969 | 42/099 |
| PENNSYLVANIA | Philadelphia County | Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE | Nonattainment | Whole | 1,526,006 | 42/101 |
| PENNSYLVANIA | Tioga County | Tioga County, PA | Maintenance | Whole | 41,981 | 42/117 |
| PENNSYLVANIA | Washington County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 207,820 | 42/125 |
| PENNSYLVANIA | Westmoreland County | Pittsburgh-Beaver Valley, PA | Nonattainment | Whole | 365,169 | 42/129 |
| PENNSYLVANIA | Wyoming County | Scranton-Wilkes-Barre, PA | Maintenance | Whole | 28,276 | 42/131 |
| PENNSYLVANIA | York County | York, PA | Maintenance | Whole | 434,972 | 42/133 |
| RHODE ISLAND | Bristol County | Providence (all of RI), RI | Nonattainment | Whole | 49,875 | 44/001 |
| RHODE ISLAND | Kent County | Providence (all of RI), RI | Nonattainment | Whole | 166,158 | 44/003 |
| RHODE ISLAND | Newport County | Providence (all of RI), RI | Nonattainment | Whole | 82,888 | 44/005 |
| RHODE ISLAND | Providence County | Providence (all of RI), RI | Nonattainment | Whole | 626,667 | 44/007 |
| RHODE ISLAND | Washington County | Providence (all of RI), RI | Nonattainment | Whole | 126,979 | 44/009 |
| SOUTH CAROLINA | York County | Charlotte-Gastonia-Rock Hill, NC-SC | Maintenance | Part | 178,913 | 45/091 |
| TENNESSEE | Anderson County | Knoxville, TN | Maintenance | Whole | 75,129 | 47/001 |
| TENNESSEE | Blount County | Knoxville, TN | Maintenance | Whole | 123,010 | 47/009 |
| TENNESSEE | Cocke County | Knoxville, TN | Maintenance | Part | 1,666 | 47/029 |
| TENNESSEE | Jefferson County | Knoxville, TN | Maintenance | Whole | 51,407 | 47/089 |
| TENNESSEE | Knox County | Knoxville, TN | Maintenance | Whole | 432,226 | 47/093 |
| TENNESSEE | Loudon County | Knoxville, TN | Maintenance | Whole | 48,556 | 47/105 |
| TENNESSEE | Montgomery County | Clarksville-Hopkinsville, TN-KY | Maintenance | Whole | 172,331 | 47/125 |
| TENNESSEE | Sevier County | Knoxville, TN | Maintenance | Whole | 89,889 | 47/155 |
| TENNESSEE | Shelby County | Memphis, TN-AR | Maintenance | Whole | 927,644 | 47/157 |
| TEXAS | Brazoria County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 313,166 | 48/039 |
| TEXAS | Chambers County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 35,096 | 48/071 |
| TEXAS | Collin County | Dallas-Fort Worth, TX | Nonattainment | Whole | 782,341 | 48/085 |
| TEXAS | Dallas County | Dallas-Fort Worth, TX | Nonattainment | Whole | 2,368,139 | 48/113 |
| TEXAS | Denton County | Dallas-Fort Worth, TX | Nonattainment | Whole | 662,614 | 48/121 |
| TEXAS | Ellis County | Dallas-Fort Worth, TX | Nonattainment | Whole | 149,610 | 48/139 |
| TEXAS | Fort Bend County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 585,375 | 48/157 |
| TEXAS | Galveston County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 291,309 | 48/167 |
| TEXAS | Hardin County | Beaumont-Port Arthur, TX | Maintenance | Whole | 54,635 | 48/199 |
| TEXAS | Harris County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 4,092,459 | 48/201 |
| TEXAS | Jefferson County | Beaumont-Port Arthur, TX | Maintenance | Whole | 252,273 | 48/245 |
| TEXAS | Johnson County | Dallas-Fort Worth, TX | Nonattainment | Whole | 150,934 | 48/251 |
| TEXAS | Kaufman County | Dallas-Fort Worth, TX | Nonattainment | Whole | 103,350 | 48/257 |
| TEXAS | Liberty County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 75,643 | 48/291 |
| TEXAS | Montgomery County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 455,746 | 48/339 |
| TEXAS | Orange County | Beaumont-Port Arthur, TX | Maintenance | Whole | 81,837 | 48/361 |
| TEXAS | Parker County | Dallas-Fort Worth, TX | Nonattainment | Whole | 116,927 | 48/367 |
| TEXAS | Rockwall County | Dallas-Fort Worth, TX | Nonattainment | Whole | 78,337 | 48/397 |
| TEXAS | Tarrant County | Dallas-Fort Worth, TX | Nonattainment | Whole | 1,809,034 | 48/439 |
| TEXAS | Waller County | Houston-Galveston-Brazoria, TX | Nonattainment | Whole | 43,205 | 48/473 |
| VIRGINIA | Alexandria city | Washington, DC-MD-VA | Nonattainment | Whole | 139,966 | 51/510 |
| VIRGINIA | Arlington County | Washington, DC-MD-VA | Nonattainment | Whole | 207,627 | 51/013 |
| VIRGINIA | Charles City County | Richmond-Petersburg, VA | Maintenance | Whole | 7,256 | 51/036 |
| VIRGINIA | Chesapeake city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 222,209 | 51/550 |
| VIRGINIA | Chesterfield County | Richmond-Petersburg, VA | Maintenance | Whole | 316,236 | 51/041 |
| VIRGINIA | Colonial Heights city | Richmond-Petersburg, VA | Maintenance | Whole | 17,411 | 51/570 |
| VIRGINIA | Fairfax County | Washington, DC-MD-VA | Nonattainment | Whole | 1,081,726 | 51/059 |
| VIRGINIA | Fairfax city | Washington, DC-MD-VA | Nonattainment | Whole | 22,565 | 51/600 |
| VIRGINIA | Falls Church city | Washington, DC-MD-VA | Nonattainment | Whole | 12,332 | 51/610 |
| VIRGINIA | Fredericksburg city | Fredericksburg, VA | Maintenance | Whole | 24,286 | 51/630 |
| VIRGINIA | Gloucester County | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 36,858 | 51/073 |
| VIRGINIA | Hampton city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 137,436 | 51/650 |
| VIRGINIA | Hanover County | Richmond-Petersburg, VA | Maintenance | Whole | 99,863 | 51/085 |
| VIRGINIA | Henrico County | Richmond-Petersburg, VA | Maintenance | Whole | 306,935 | 51/087 |
| VIRGINIA | Hopewell city | Richmond-Petersburg, VA | Maintenance | Whole | 22,591 | 51/670 |
| VIRGINIA | Isle of Wight County | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 35,270 | 51/093 |
| VIRGINIA | James City County | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 67,009 | 51/095 |
| VIRGINIA | Loudoun County | Washington, DC-MD-VA | Nonattainment | Whole | 312,311 | 51/107 |
| VIRGINIA | Madison County | Madison and Page Counties (Shenandoah NP), VA | Maintenance | Part | 237 | 51/113 |
| VIRGINIA | Manassas Park city | Washington, DC-MD-VA | Nonattainment | Whole | 14,273 | 51/685 |
| VIRGINIA | Manassas city | Washington, DC-MD-VA | Nonattainment | Whole | 37,821 | 51/683 |
| VIRGINIA | Newport News city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 180,719 | 51/700 |
| VIRGINIA | Norfolk city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 242,803 | 51/710 |
| VIRGINIA | Page County | Madison and Page Counties (Shenandoah NP), VA | Maintenance | Part | 1,789 | 51/139 |
| VIRGINIA | Petersburg city | Richmond-Petersburg, VA | Maintenance | Whole | 32,420 | 51/730 |
| VIRGINIA | Poquoson city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 12,150 | 51/735 |
| VIRGINIA | Portsmouth city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 95,535 | 51/740 |
| VIRGINIA | Prince George County | Richmond-Petersburg, VA | Maintenance | Whole | 35,725 | 51/149 |
| VIRGINIA | Prince William County | Washington, DC-MD-VA | Nonattainment | Whole | 402,002 | 51/153 |
| VIRGINIA | Richmond city | Richmond-Petersburg, VA | Maintenance | Whole | 204,214 | 51/760 |
| VIRGINIA | Spotsylvania County | Fredericksburg, VA | Maintenance | Whole | 122,397 | 51/177 |
| VIRGINIA | Stafford County | Fredericksburg, VA | Maintenance | Whole | 128,961 | 51/179 |
| VIRGINIA | Suffolk city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 84,585 | 51/800 |
| VIRGINIA | Virginia Beach city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 437,994 | 51/810 |
| VIRGINIA | Williamsburg city | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 14,068 | 51/830 |
| VIRGINIA | York County | Norfolk-Virginia Beach-Newport News (Hampton Roads), VA | Maintenance | Whole | 65,464 | 51/199 |
| WEST VIRGINIA | Brooke County | Steubenville-Weirton, OH-WV | Maintenance | Whole | 24,069 | 54/009 |
| WEST VIRGINIA | Cabell County | Huntington-Ashland, WV-KY | Maintenance | Whole | 96,319 | 54/011 |
| WEST VIRGINIA | Hancock County | Steubenville-Weirton, OH-WV | Maintenance | Whole | 30,676 | 54/029 |
| WEST VIRGINIA | Kanawha County | Charleston, WV | Maintenance | Whole | 193,063 | 54/039 |
| WEST VIRGINIA | Marshall County | Wheeling, WV-OH | Maintenance | Whole | 33,107 | 54/051 |
| WEST VIRGINIA | Ohio County | Wheeling, WV-OH | Maintenance | Whole | 44,443 | 54/069 |
| WEST VIRGINIA | Putnam County | Charleston, WV | Maintenance | Whole | 55,486 | 54/079 |
| WEST VIRGINIA | Wayne County | Huntington-Ashland, WV-KY | Maintenance | Whole | 42,481 | 54/099 |
| WEST VIRGINIA | Wood County | Parkersburg-Marietta, WV-OH | Maintenance | Whole | 86,956 | 54/107 |
| WISCONSIN | Door County | Door County, WI | Maintenance | Whole | 27,785 | 55/029 |
| WISCONSIN | Kenosha County | Milwaukee-Racine, WI | Maintenance | Whole | 166,426 | 55/059 |
| WISCONSIN | Kewaunee County | Kewaunee County, WI | Maintenance | Whole | 20,574 | 55/061 |
| WISCONSIN | Manitowoc County | Manitowoc County, WI | Maintenance | Whole | 81,442 | 55/071 |
| WISCONSIN | Milwaukee County | Milwaukee-Racine, WI | Maintenance | Whole | 947,735 | 55/079 |
| WISCONSIN | Ozaukee County | Milwaukee-Racine, WI | Maintenance | Whole | 86,395 | 55/089 |
| WISCONSIN | Racine County | Milwaukee-Racine, WI | Maintenance | Whole | 195,408 | 55/101 |
| WISCONSIN | Sheboygan County | Inland Sheboygan County, WI | Nonattainment | Part | 53,851 | 55/117 |
| WISCONSIN | Sheboygan County | Shoreline Sheboygan County, WI | Nonattainment | Part | 61,656 | 55/117 |
| WISCONSIN | Washington County | Milwaukee-Racine, WI | Maintenance | Whole | 131,887 | 55/131 |
| WISCONSIN | Waukesha County | Milwaukee-Racine, WI | Maintenance | Whole | 389,891 | 55/133 |
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