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8-Hour Ozone (2008) Maintenance Areas (Redesignated from Nonattainment) by State/County/Area
8-Hour Ozone (2008) Maintenance Areas (Redesignated from Nonattainment) by State/County/Area
Data is current as of March 31, 2024Click underlined column heading to change report order
| State | County | Area Name | County NA Whole/Part |
2010 Population |
State/ County FIPS |
|---|---|---|---|---|---|
| click link for partial county description |
whole or partial county population |
||||
| ARKANSAS | Crittenden County | Memphis, TN-MS-AR | Whole | 50,902 | 05/035 |
| DISTRICT OF COLUMBIA | District of Columbia | Washington, DC-MD-VA | Whole | 601,723 | 11/001 |
| GEORGIA | Bartow County | Atlanta, GA | Whole | 100,157 | 13/015 |
| GEORGIA | Cherokee County | Atlanta, GA | Whole | 214,346 | 13/057 |
| GEORGIA | Clayton County | Atlanta, GA | Whole | 259,424 | 13/063 |
| GEORGIA | Cobb County | Atlanta, GA | Whole | 688,078 | 13/067 |
| GEORGIA | Coweta County | Atlanta, GA | Whole | 127,317 | 13/077 |
| GEORGIA | DeKalb County | Atlanta, GA | Whole | 691,893 | 13/089 |
| GEORGIA | Douglas County | Atlanta, GA | Whole | 132,403 | 13/097 |
| GEORGIA | Fayette County | Atlanta, GA | Whole | 106,567 | 13/113 |
| GEORGIA | Forsyth County | Atlanta, GA | Whole | 175,511 | 13/117 |
| GEORGIA | Fulton County | Atlanta, GA | Whole | 920,581 | 13/121 |
| GEORGIA | Gwinnett County | Atlanta, GA | Whole | 805,321 | 13/135 |
| GEORGIA | Henry County | Atlanta, GA | Whole | 203,922 | 13/151 |
| GEORGIA | Newton County | Atlanta, GA | Whole | 99,958 | 13/217 |
| GEORGIA | Paulding County | Atlanta, GA | Whole | 142,324 | 13/223 |
| GEORGIA | Rockdale County | Atlanta, GA | Whole | 85,215 | 13/247 |
| ILLINOIS | Cook County | Chicago-Naperville, IL-IN-WI | Whole | 5,194,675 | 17/031 |
| ILLINOIS | DuPage County | Chicago-Naperville, IL-IN-WI | Whole | 916,924 | 17/043 |
| ILLINOIS | Grundy County | Chicago-Naperville, IL-IN-WI | Part | 20,519 | 17/063 |
| ILLINOIS | Kane County | Chicago-Naperville, IL-IN-WI | Whole | 515,269 | 17/089 |
| ILLINOIS | Kendall County | Chicago-Naperville, IL-IN-WI | Part | 52,377 | 17/093 |
| ILLINOIS | Lake County | Chicago-Naperville, IL-IN-WI | Whole | 703,462 | 17/097 |
| ILLINOIS | Madison County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 269,282 | 17/119 |
| ILLINOIS | McHenry County | Chicago-Naperville, IL-IN-WI | Whole | 308,760 | 17/111 |
| ILLINOIS | Monroe County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 32,957 | 17/133 |
| ILLINOIS | St. Clair County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 270,056 | 17/163 |
| ILLINOIS | Will County | Chicago-Naperville, IL-IN-WI | Whole | 677,560 | 17/197 |
| INDIANA | Dearborn County | Cincinnati, OH-KY-IN | Part | 13,600 | 18/029 |
| INDIANA | Lake County | Chicago-Naperville, IL-IN-WI | Whole | 496,005 | 18/089 |
| INDIANA | Porter County | Chicago-Naperville, IL-IN-WI | Whole | 164,343 | 18/127 |
| KENTUCKY | Boone County | Cincinnati, OH-KY-IN | Part | 114,575 | 21/015 |
| KENTUCKY | Campbell County | Cincinnati, OH-KY-IN | Part | 83,873 | 21/037 |
| KENTUCKY | Kenton County | Cincinnati, OH-KY-IN | Part | 154,303 | 21/117 |
| LOUISIANA | Ascension Parish | Baton Rouge, LA | Whole | 107,215 | 22/005 |
| LOUISIANA | East Baton Rouge Parish | Baton Rouge, LA | Whole | 440,171 | 22/033 |
| LOUISIANA | Iberville Parish | Baton Rouge, LA | Whole | 33,387 | 22/047 |
| LOUISIANA | Livingston Parish | Baton Rouge, LA | Whole | 128,026 | 22/063 |
| LOUISIANA | West Baton Rouge Parish | Baton Rouge, LA | Whole | 23,788 | 22/121 |
| MARYLAND | Calvert County | Washington, DC-MD-VA | Whole | 88,737 | 24/009 |
| MARYLAND | Charles County | Washington, DC-MD-VA | Whole | 146,551 | 24/017 |
| MARYLAND | Frederick County | Washington, DC-MD-VA | Whole | 233,385 | 24/021 |
| MARYLAND | Montgomery County | Washington, DC-MD-VA | Whole | 971,777 | 24/031 |
| MARYLAND | Prince George's County | Washington, DC-MD-VA | Whole | 863,420 | 24/033 |
| MISSISSIPPI | DeSoto County | Memphis, TN-MS-AR | Part | 148,923 | 28/033 |
| MISSOURI | Franklin County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 101,492 | 29/071 |
| MISSOURI | Jefferson County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 218,733 | 29/099 |
| MISSOURI | St. Charles County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 360,485 | 29/183 |
| MISSOURI | St. Louis County | St. Louis-St. Charles-Farmington, MO-IL | Whole | 998,954 | 29/189 |
| MISSOURI | St. Louis city | St. Louis-St. Charles-Farmington, MO-IL | Whole | 319,294 | 29/510 |
| NORTH CAROLINA | Cabarrus County | Charlotte-Rock Hill, NC-SC | Part | 176,928 | 37/025 |
| NORTH CAROLINA | Gaston County | Charlotte-Rock Hill, NC-SC | Part | 190,849 | 37/071 |
| NORTH CAROLINA | Iredell County | Charlotte-Rock Hill, NC-SC | Part | 65,899 | 37/097 |
| NORTH CAROLINA | Lincoln County | Charlotte-Rock Hill, NC-SC | Part | 64,189 | 37/109 |
| NORTH CAROLINA | Mecklenburg County | Charlotte-Rock Hill, NC-SC | Whole | 919,628 | 37/119 |
| NORTH CAROLINA | Rowan County | Charlotte-Rock Hill, NC-SC | Part | 130,057 | 37/159 |
| NORTH CAROLINA | Union County | Charlotte-Rock Hill, NC-SC | Part | 176,055 | 37/179 |
| OHIO | Ashtabula County | Cleveland-Akron-Lorain, OH | Whole | 101,497 | 39/007 |
| OHIO | Butler County | Cincinnati, OH-KY-IN | Whole | 368,130 | 39/017 |
| OHIO | Clermont County | Cincinnati, OH-KY-IN | Whole | 197,363 | 39/025 |
| OHIO | Clinton County | Cincinnati, OH-KY-IN | Whole | 42,040 | 39/027 |
| OHIO | Cuyahoga County | Cleveland-Akron-Lorain, OH | Whole | 1,280,122 | 39/035 |
| OHIO | Delaware County | Columbus, OH | Whole | 174,214 | 39/041 |
| OHIO | Fairfield County | Columbus, OH | Whole | 146,156 | 39/045 |
| OHIO | Franklin County | Columbus, OH | Whole | 1,163,414 | 39/049 |
| OHIO | Geauga County | Cleveland-Akron-Lorain, OH | Whole | 93,389 | 39/055 |
| OHIO | Hamilton County | Cincinnati, OH-KY-IN | Whole | 802,374 | 39/061 |
| OHIO | Knox County | Columbus, OH | Whole | 60,921 | 39/083 |
| OHIO | Lake County | Cleveland-Akron-Lorain, OH | Whole | 230,041 | 39/085 |
| OHIO | Licking County | Columbus, OH | Whole | 166,492 | 39/089 |
| OHIO | Lorain County | Cleveland-Akron-Lorain, OH | Whole | 301,356 | 39/093 |
| OHIO | Madison County | Columbus, OH | Whole | 43,435 | 39/097 |
| OHIO | Medina County | Cleveland-Akron-Lorain, OH | Whole | 172,332 | 39/103 |
| OHIO | Portage County | Cleveland-Akron-Lorain, OH | Whole | 161,419 | 39/133 |
| OHIO | Summit County | Cleveland-Akron-Lorain, OH | Whole | 541,781 | 39/153 |
| OHIO | Warren County | Cincinnati, OH-KY-IN | Whole | 212,693 | 39/165 |
| SOUTH CAROLINA | York County | Charlotte-Rock Hill, NC-SC | Part | 177,819 | 45/091 |
| TENNESSEE | Anderson County | Knoxville, TN | Part | 18,216 | 47/001 |
| TENNESSEE | Blount County | Knoxville, TN | Whole | 123,010 | 47/009 |
| TENNESSEE | Knox County | Knoxville, TN | Whole | 432,226 | 47/093 |
| TENNESSEE | Shelby County | Memphis, TN-MS-AR | Whole | 927,644 | 47/157 |
| VIRGINIA | Alexandria city | Washington, DC-MD-VA | Whole | 139,966 | 51/510 |
| VIRGINIA | Arlington County | Washington, DC-MD-VA | Whole | 207,627 | 51/013 |
| VIRGINIA | Fairfax County | Washington, DC-MD-VA | Whole | 1,081,726 | 51/059 |
| VIRGINIA | Fairfax city | Washington, DC-MD-VA | Whole | 22,565 | 51/600 |
| VIRGINIA | Falls Church city | Washington, DC-MD-VA | Whole | 12,332 | 51/610 |
| VIRGINIA | Loudoun County | Washington, DC-MD-VA | Whole | 312,311 | 51/107 |
| VIRGINIA | Manassas Park city | Washington, DC-MD-VA | Whole | 14,273 | 51/685 |
| VIRGINIA | Manassas city | Washington, DC-MD-VA | Whole | 37,821 | 51/683 |
| VIRGINIA | Prince William County | Washington, DC-MD-VA | Whole | 402,002 | 51/153 |
| WISCONSIN | Kenosha County | Chicago-Naperville, IL-IN-WI | Part | 129,844 | 55/059 |
| WISCONSIN | Sheboygan County | Inland Sheboygan County, WI | Part | 53,851 | 55/117 |
| WISCONSIN | Sheboygan County | Shoreline Sheboygan County, WI | Part | 61,656 | 55/117 |
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