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Carbon Monoxide (1971) Maintenance Areas (Redesignated from Nonattainment) by State/County/Area

Data is current as of July 31, 2019

Click 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
ALASKA Anchorage Municipality Anchorage, AK Part 286,227 02/020
ALASKA Fairbanks North Star Borough Fairbanks, AK Part 46,211 02/090
ARIZONA Maricopa County Phoenix, AZ Part 3,763,324 04/013
ARIZONA Pima County Tucson, AZ Part 595,314 04/019
CALIFORNIA Alameda County San Francisco-Oakland-San Jose, CA Part 715,578 06/001
CALIFORNIA Butte County Chico, CA Part 86,963 06/007
CALIFORNIA Contra Costa County San Francisco-Oakland-San Jose, CA Part 848,335 06/013
CALIFORNIA El Dorado County Lake Tahoe South Shore, CA Part 43,110 06/017
CALIFORNIA Fresno County Fresno, CA Part 631,483 06/019
CALIFORNIA Kern County Bakersfield, CA Part 468,092 06/029
CALIFORNIA Los Angeles County Los Angeles-South Coast Air Basin, CA Part 9,512,219 06/037
CALIFORNIA Marin County San Francisco-Oakland-San Jose, CA Part 219,393 06/041
CALIFORNIA Napa County San Francisco-Oakland-San Jose, CA Part 123,217 06/055
CALIFORNIA Orange County Los Angeles-South Coast Air Basin, CA Whole 3,010,232 06/059
CALIFORNIA Placer County Lake Tahoe North Shore, CA Part 16,132 06/061
CALIFORNIA Placer County Sacramento, CA Part 102,822 06/061
CALIFORNIA Riverside County Los Angeles-South Coast Air Basin, CA Part 1,692,996 06/065
CALIFORNIA Sacramento County Sacramento, CA Part 1,381,740 06/067
CALIFORNIA San Bernardino County Los Angeles-South Coast Air Basin, CA Part 1,583,687 06/071
CALIFORNIA San Diego County San Diego, CA Part 2,909,194 06/073
CALIFORNIA San Francisco County San Francisco-Oakland-San Jose, CA Whole 805,235 06/075
CALIFORNIA San Joaquin County Stockton, CA Part 373,545 06/077
CALIFORNIA San Mateo County San Francisco-Oakland-San Jose, CA Part 497,688 06/081
CALIFORNIA Santa Clara County San Francisco-Oakland-San Jose, CA Part 594,906 06/085
CALIFORNIA Solano County San Francisco-Oakland-San Jose, CA Part 242,850 06/095
CALIFORNIA Sonoma County San Francisco-Oakland-San Jose, CA Part 249,297 06/097
CALIFORNIA Stanislaus County Modesto, CA Part 320,707 06/099
CALIFORNIA Yolo County Sacramento, CA Part 45,554 06/113
COLORADO Adams County Denver-Boulder, CO Part 432,838 08/001
COLORADO Arapahoe County Denver-Boulder, CO Part 567,075 08/005
COLORADO Boulder County Denver-Boulder, CO Part 203,419 08/013
COLORADO Boulder County Longmont, CO Part 36,697 08/013
COLORADO Broomfield County Denver-Boulder, CO Whole 55,889 08/014
COLORADO Denver County Denver-Boulder, CO Whole 600,158 08/031
COLORADO Douglas County Denver-Boulder, CO Part 236,334 08/035
COLORADO El Paso County Colorado Springs, CO Part 540,760 08/041
COLORADO Jefferson County Denver-Boulder, CO Part 514,924 08/059
COLORADO Larimer County Fort Collins, CO Part 170,639 08/069
COLORADO Teller County Colorado Springs, CO Part 14,982 08/119
COLORADO Weld County Greeley, CO Part 138,101 08/123
COLORADO Weld County Longmont, CO Part 49,861 08/123
CONNECTICUT Fairfield County New Haven-Meriden-Waterbury, CT Part 39,579 09/001
CONNECTICUT Fairfield County New York-N. New Jersey-Long Island, NY-NJ-CT Part 877,270 09/001
CONNECTICUT Hartford County Hartford-New Britain-Middletown, CT Part 891,900 09/003
CONNECTICUT Litchfield County Hartford-New Britain-Middletown, CT Part 12,127 09/005
CONNECTICUT Litchfield County New Haven-Meriden-Waterbury, CT Part 43,556 09/005
CONNECTICUT Litchfield County New York-N. New Jersey-Long Island, NY-NJ-CT Part 30,172 09/005
CONNECTICUT Middlesex County Hartford-New Britain-Middletown, CT Part 113,405 09/007
CONNECTICUT New Haven County New Haven-Meriden-Waterbury, CT Whole 862,477 09/009
CONNECTICUT Tolland County Hartford-New Britain-Middletown, CT Part 89,246 09/013
DISTRICT OF COLUMBIA District of Columbia Washington, DC-MD-VA Whole 601,723 11/001
IDAHO Ada County Boise-Northern Ada County, ID Part 257,440 16/001
INDIANA Lake County East Chicago, IN Part 5,208 18/089
INDIANA Marion County Indianapolis, IN Part 61,160 18/097
MARYLAND Baltimore city Baltimore, MD Part 15,455 24/510
MARYLAND Montgomery County Washington, DC-MD-VA Part 474,416 24/031
MARYLAND Prince George's County Washington, DC-MD-VA Part 369,359 24/033
MASSACHUSETTS Hampden County Springfield, MA Part 153,060 25/013
MASSACHUSETTS Middlesex County Boston, MA Part 338,206 25/017
MASSACHUSETTS Middlesex County Lowell, MA Part 106,519 25/017
MASSACHUSETTS Middlesex County Waltham, MA Part 60,632 25/017
MASSACHUSETTS Norfolk County Boston, MA Part 92,271 25/021
MASSACHUSETTS Suffolk County Boston, MA Part 704,526 25/025
MASSACHUSETTS Worcester County Worcester, MA Part 181,045 25/027
MICHIGAN Macomb County Detroit, MI Part 295,428 26/099
MICHIGAN Oakland County Detroit, MI Part 435,027 26/125
MICHIGAN Wayne County Detroit, MI Part 651,784 26/163
MINNESOTA Anoka County Minneapolis-St. Paul, MN Whole 330,844 27/003
MINNESOTA Carver County Minneapolis-St. Paul, MN Part 77,969 27/019
MINNESOTA Dakota County Minneapolis-St. Paul, MN Part 380,675 27/037
MINNESOTA Hennepin County Minneapolis-St. Paul, MN Whole 1,152,425 27/053
MINNESOTA Ramsey County Minneapolis-St. Paul, MN Whole 508,640 27/123
MINNESOTA Scott County Minneapolis-St. Paul, MN Part 119,772 27/139
MINNESOTA St. Louis County Duluth, MN Part 85,857 27/137
MINNESOTA Washington County Minneapolis-St. Paul, MN Part 236,399 27/163
MINNESOTA Wright County Minneapolis-St. Paul, MN Part 113,454 27/171
MISSOURI St. Louis County St. Louis, MO Part 908,233 29/189
MISSOURI St. Louis city St. Louis, MO Whole 319,294 29/510
MONTANA Cascade County Great Falls, MT Part 57,573 30/013
MONTANA Missoula County Missoula, MT Part 59,733 30/063
MONTANA Yellowstone County Billings, MT Part 104,360 30/111
NEVADA Carson City Lake Tahoe, NV Part 10,342 32/510
NEVADA Clark County Las Vegas, NV Part 679,034 32/003
NEVADA Douglas County Lake Tahoe, NV Part 10,401 32/005
NEVADA Washoe County Lake Tahoe, NV Part 12,516 32/031
NEVADA Washoe County Reno, NV Part 221,743 32/031
NEW HAMPSHIRE Hillsborough County Manchester, NH Part 109,565 33/011
NEW HAMPSHIRE Hillsborough County Nashua, NH Part 86,494 33/011
NEW JERSEY Atlantic County Atlantic City, NJ Part 44,944 34/001
NEW JERSEY Bergen County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 905,116 34/003
NEW JERSEY Burlington County Burlington, NJ Part 10,993 34/005
NEW JERSEY Camden County Philadelphia-Camden Co, PA-NJ Whole 513,657 34/007
NEW JERSEY Essex County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 783,969 34/013
NEW JERSEY Hudson County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 634,266 34/017
NEW JERSEY Mercer County Trenton, NJ Part 97,712 34/021
NEW JERSEY Middlesex County Perth Amboy, NJ Part 49,645 34/023
NEW JERSEY Monmouth County Freehold, NJ Part 12,734 34/025
NEW JERSEY Morris County Morristown, NJ Part 21,955 34/027
NEW JERSEY Ocean County Toms River, NJ Part 10,667 34/029
NEW JERSEY Passaic County New York-N. New Jersey-Long Island, NY-NJ-CT Part 300,116 34/031
NEW JERSEY Salem County Penns Grove, NJ Part 5,201 34/033
NEW JERSEY Somerset County Somerville, NJ Part 15,557 34/035
NEW JERSEY Union County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 536,499 34/039
NEW MEXICO Bernalillo County Albuquerque, NM Whole 662,564 35/001
NEW YORK Bronx County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 1,385,108 36/005
NEW YORK Kings County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 2,504,700 36/047
NEW YORK Nassau County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 1,339,532 36/059
NEW YORK New York County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 1,585,873 36/061
NEW YORK Onondaga County Syracuse, NY Whole 467,026 36/067
NEW YORK Queens County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 2,230,722 36/081
NEW YORK Richmond County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 468,730 36/085
NEW YORK Westchester County New York-N. New Jersey-Long Island, NY-NJ-CT Whole 949,113 36/119
NORTH CAROLINA Durham County Raleigh-Durham, NC Whole 267,587 37/063
NORTH CAROLINA Forsyth County Winston-Salem, NC Whole 350,670 37/067
NORTH CAROLINA Mecklenburg County Charlotte, NC Whole 919,628 37/119
NORTH CAROLINA Wake County Raleigh-Durham, NC Whole 900,993 37/183
OHIO Cuyahoga County Cleveland, OH Whole 1,280,122 39/035
OREGON Clackamas County Portland, OR Part 233,262 41/005
OREGON Jackson County Medford, OR Part 86,056 41/029
OREGON Josephine County Grants Pass, OR Part 22,449 41/033
OREGON Klamath County Klamath Falls, OR Part 20,703 41/035
OREGON Lane County Eugene-Springfield, OR Part 234,972 41/039
OREGON Marion County Salem, OR Part 80,695 41/047
OREGON Multnomah County Portland, OR Part 629,654 41/051
OREGON Polk County Salem, OR Part 75,405 41/053
OREGON Washington County Portland, OR Part 467,557 41/067
PENNSYLVANIA Allegheny County Pittsburgh, PA Part 320,395 42/003
PENNSYLVANIA Philadelphia County Philadelphia-Camden Co, PA-NJ Part 673,750 42/101
TENNESSEE Shelby County Memphis, TN Whole 927,644 47/157
TEXAS El Paso County El Paso, TX Part 73,100 48/141
UTAH Salt Lake County Salt Lake City, UT Part 186,440 49/035
UTAH Utah County Provo, UT Part 166,596 49/049
UTAH Weber County Ogden, UT Part 82,825 49/057
VIRGINIA Alexandria city Washington, DC-MD-VA Whole 139,966 51/510
VIRGINIA Arlington County Washington, DC-MD-VA Whole 207,627 51/013
WASHINGTON Clark County Vancouver, WA Part 400,271 53/011
WASHINGTON King County Seattle-Tacoma, WA Part 1,693,693 53/033
WASHINGTON Pierce County Seattle-Tacoma, WA Part 697,408 53/053
WASHINGTON Snohomish County Seattle-Tacoma, WA Part 625,609 53/061
WASHINGTON Spokane County Spokane, WA Part 363,834 53/063
WASHINGTON Yakima County Yakima, WA Part 69,565 53/077


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