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PM-10 (1987) Maintenance Areas (Redesignated from Nonattainment) by State/County/Area

Data is current as of October 31, 2022

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; Eagle River, AK Part 219,193 02/020
ALASKA Juneau City and Borough Juneau; Mendenhall Valley area, AK Part 14,030 02/110
ARIZONA Gila County Gila County (part): Payson, AZ Part 5,333 04/007
ARIZONA Mohave County Mohave County (part); Bullhead City, AZ Part 10,710 04/015
ARIZONA Pima County Pima County; Ajo planning area, AZ Part 8,823 04/019
CALIFORNIA Fresno County San Joaquin Valley Air Basin, CA Whole 930,450 06/019
CALIFORNIA Imperial County Imperial Valley, CA Part 146,905 06/025
CALIFORNIA Inyo County Coso Junction, CA Part 7,333 06/027
CALIFORNIA Kern County Indian Wells, CA Part 15,449 06/029
CALIFORNIA Kern County San Joaquin Valley Air Basin, CA Part 698,229 06/029
CALIFORNIA Kings County San Joaquin Valley Air Basin, CA Whole 152,982 06/031
CALIFORNIA Los Angeles County Riverside, Los Angeles, Orange, & San Bernardino Counties; South Coast Air Basin, CA Part 9,512,219 06/037
CALIFORNIA Madera County San Joaquin Valley Air Basin, CA Whole 150,865 06/039
CALIFORNIA Merced County San Joaquin Valley Air Basin, CA Whole 255,793 06/047
CALIFORNIA Mono County Mono County; Mammoth Lake planning area, CA Part 7,133 06/051
CALIFORNIA Orange County Riverside, Los Angeles, Orange, & San Bernardino Counties; South Coast Air Basin, CA Whole 3,010,232 06/059
CALIFORNIA Riverside County Riverside, Los Angeles, Orange, & San Bernardino Counties; South Coast Air Basin, CA Part 1,692,996 06/065
CALIFORNIA Sacramento County Sacramento County, CA Whole 1,418,788 06/067
CALIFORNIA San Bernardino County Riverside, Los Angeles, Orange, & San Bernardino Counties; South Coast Air Basin, CA Part 1,583,687 06/071
CALIFORNIA San Joaquin County San Joaquin Valley Air Basin, CA Whole 685,306 06/077
CALIFORNIA Stanislaus County San Joaquin Valley Air Basin, CA Whole 514,453 06/099
CALIFORNIA Tulare County San Joaquin Valley Air Basin, CA Whole 442,179 06/107
COLORADO Adams County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Part 432,838 08/001
COLORADO Arapahoe County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Part 567,075 08/005
COLORADO Archuleta County Archuleta County; Pagosa Springs, CO Part 2,261 08/007
COLORADO Boulder County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Part 294,556 08/013
COLORADO Broomfield County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Whole 55,889 08/014
COLORADO Denver County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Whole 600,158 08/031
COLORADO Douglas County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Whole 285,465 08/035
COLORADO Fremont County Fremont County; Canon City Area, CO Part 18,860 08/043
COLORADO Jefferson County Adams, Denver, and Boulder Counties; Denver Metropolitan area, CO Whole 534,543 08/059
COLORADO Pitkin County Pitkin County; Aspen, CO Part 6,772 08/097
COLORADO Prowers County Prowers County; Lamar, CO Part 7,523 08/099
COLORADO Routt County Routt County (part); Steamboat Springs, CO Part 12,088 08/107
COLORADO San Miguel County San Miguel County; Telluride, CO Part 2,014 08/113
IDAHO Ada County Ada County; Boise, ID Part 240,254 16/001
IDAHO Bannock County Power-Bannock Counties; Portneuf Valley Area, ID Part 65,778 16/005
IDAHO Bonner County Bonner County; The Sandpoint Area, ID Part 40,876 16/017
IDAHO Power County Power-Bannock Counties; Portneuf Valley Area, ID Part 6,618 16/077
IDAHO Shoshone County Shoshone County; City of Pinehurst, ID Part 1,578 16/079
IDAHO Shoshone County Shoshone County; Pinehurst Expansion Area, ID Part 9,691 16/079
ILLINOIS Cook County Cook County; Lyons Township, IL Part 111,688 17/031
ILLINOIS Cook County Cook County; Southeast Chicago, IL Part 3,117 17/031
ILLINOIS LaSalle County LaSalle County; Oglesby, IL Part 3,862 17/099
ILLINOIS Madison County Madison County; Granite City Township and Nameoki Township, IL Part 35,652 17/119
INDIANA Lake County Lake County; Cities of East Chicago, Hammond, Whiting, and Gary, IN Part 214,867 18/089
INDIANA Vermillion County Vermillion County; Part of Clinton Township, IN Part 9,119 18/165
MAINE Aroostook County Aroostock County; City of Presque Isle, ME Part 972 23/003
MICHIGAN Wayne County Wayne County, MI Part 713,777 26/163
MINNESOTA Olmsted County Olmsted County, MN Part 96,199 27/109
MINNESOTA Ramsey County Ramsey County, MN Part 284,783 27/123
MONTANA Flathead County Flathead County; Columbia Falls and vicinity, MT Part 4,610 30/029
MONTANA Flathead County Flathead County; Kalispell and vicinity, MT Part 18,422 30/029
MONTANA Flathead County Flathead County; Whitefish and vicinity, MT Part 6,138 30/029
MONTANA Lincoln County Lincoln County; Libby and vicinity, MT Part 3,378 30/053
MONTANA Missoula County Missoula, MT Part 59,733 30/063
MONTANA Sanders County Sanders County (part); Thompson Falls and vicinity, MT Part 1,317 30/089
MONTANA Silver Bow County Silver Bow County; Butte, MT Part 34,201 30/093
NEVADA Clark County Clark County; Las Vegas planning area, NV Part 1,951,248 32/003
NEVADA Washoe County Washoe County; Reno planning area, NV Part 421,404 32/031
OHIO Cuyahoga County Cuyahoga County, OH Whole 1,280,122 39/035
OHIO Jefferson County Jefferson County, OH Part 3,472 39/081
OREGON Jackson County Jackson County; Medford-Ashland (including White City), OR Part 87,458 41/029
OREGON Josephine County Josephine County; Grants Pass, OR Part 22,449 41/033
OREGON Klamath County Klamath Falls, OR Part 20,703 41/035
OREGON Lake County Lake County (part); Lakeview, OR Part 3,296 41/037
OREGON Lane County Lane County (part); Oakridge, OR Part 3,728 41/039
OREGON Lane County Lane County; Eugene/Springfield, OR Part 195,160 41/039
OREGON Union County Union County; LaGrande, OR Part 13,094 41/061
PENNSYLVANIA Allegheny County Allegheny County; Liberty, Lincoln, Port Vue, Glassport, Clairton, PA Part 18,700 42/003
PUERTO RICO Guaynabo Municipio Mun. of Guaynabo, PR Part 90,470 72/061
UTAH Salt Lake County Salt Lake County, UT Whole 1,029,655 49/035
UTAH Utah County Utah County, UT Whole 516,564 49/049
UTAH Weber County Ogden, UT Part 82,825 49/057
WASHINGTON King County King County; Kent, WA Part 47,315 53/033
WASHINGTON King County King County; Seattle, WA Part 661,062 53/033
WASHINGTON Pierce County Pierce County; Tacoma, WA Part 238,725 53/053
WASHINGTON Spokane County Spokane County, WA Part 230,807 53/063
WASHINGTON Thurston County Thurston County; Cities of Olympia, Tumwater, and Lacey, WA Part 98,562 53/067
WASHINGTON Walla Walla County Walla Walla County; Wallula, WA Part 426 53/071
WASHINGTON Yakima County Yakima County, WA Part 69,565 53/077
WEST VIRGINIA Brooke County Brooke; Follansbee area, WV Part 2,674 54/009
WEST VIRGINIA Brooke County Hancock and Brooke Counties (Part); The city of Weirton, WV Part 4,621 54/009
WEST VIRGINIA Hancock County Hancock and Brooke Counties (Part); The city of Weirton, WV Part 9,578 54/029
WYOMING Sheridan County Sheridan County; City of Sheridan, WY Part 17,300 56/033


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