US counties by share of days with good air quality (US EPA AQI), 2009

Bradley County 100%, the highest of 1052 counties, 2009

Baldwin County: 79.4 %Clay County: 57.1 %Colbert County: 49.8 %DeKalb County: 81 %Elmore County: 93.4 %Etowah County: 41.5 %Houston County: 69.5 %Jefferson County: 18.1 %Lawrence County: 76 %Madison County: 72.2 %Mobile County: 78.8 %Montgomery County: 42.1 %Morgan County: 35.2 %Russell County: 40 %Shelby County: 70.7 %Sumter County: 99.2 %Talladega County: 44.3 %Tuscaloosa County: 56.2 %Walker County: 48.3 %Aleutians East Borough: 98.3 %Anchorage Municipality: 70.2 %Denali Borough: 97.5 %Fairbanks North Star Borough: 52.2 %Juneau City and Borough: 75.6 %Kenai Peninsula Borough: 100 %Matanuska-Susitna Borough: 81.7 %Yukon-Koyukuk Census Area: 91.9 %Apache County: 95.6 %Cochise County: 68.6 %Coconino County: 69.7 %Gila County: 55 %La Paz County: 61 %Maricopa County: 21.4 %Mohave County: 82 %Navajo County: 76.2 %Pima County: 55.9 %Pinal County: 11.2 %Santa Cruz County: 55.2 %Yavapai County: 84.8 %Yuma County: 65.8 %Arkansas County: 50 %Ashley County: 49.1 %Clark County: 96.8 %Crittenden County: 76.2 %Faulkner County: 49.2 %Garland County: 47.1 %Jackson County: 55.2 %Newton County: 84.2 %Phillips County: 48.3 %Polk County: 73 %Pope County: 40.3 %Pulaski County: 36.2 %Sebastian County: 39.8 %Union County: 47.1 %Washington County: 78.9 %White County: 45.3 %Alameda County: 33.2 %Amador County: 82.3 %Butte County: 41.4 %Calaveras County: 72 %Colusa County: 49.6 %Contra Costa County: 66.8 %Del Norte County: 96.8 %El Dorado County: 66.3 %Fresno County: 23.6 %Glenn County: 55.9 %Humboldt County: 92 %Imperial County: 38.9 %Inyo County: 58.9 %Kern County: 4.7 %Kings County: 20.5 %Lake County: 96.4 %Los Angeles County: 5.2 %Madera County: 71.8 %Marin County: 86.6 %Mariposa County: 32.6 %Mendocino County: 29.3 %Merced County: 50.4 %Mono County: 86.8 %Monterey County: 96.2 %Napa County: 57.8 %Nevada County: 63.7 %Orange County: 21.4 %Placer County: 35.1 %Plumas County: 46.2 %Riverside County: 3.3 %Sacramento County: 38.9 %San Benito County: 78.9 %San Bernardino County: 14.2 %San Diego County: 9 %San Francisco County: 31 %San Joaquin County: 60.3 %San Luis Obispo County: 41.6 %San Mateo County: 51 %Santa Barbara County: 68.8 %Santa Clara County: 48.8 %Santa Cruz County: 96.2 %Shasta County: 74.5 %Siskiyou County: 95.4 %Solano County: 54.8 %Sonoma County: 82.2 %Stanislaus County: 27.4 %Sutter County: 36.7 %Tehama County: 64.8 %Trinity County: 99.2 %Tulare County: 19.5 %Tuolumne County: 70.9 %Ventura County: 49.6 %Yolo County: 56.2 %Adams County: 61.1 %Alamosa County: 96.1 %Arapahoe County: 71.6 %Archuleta County: 96.3 %Boulder County: 66.6 %Chaffee County: 62.3 %Clear Creek County: 54.3 %Delta County: 95.9 %Denver County: 63 %Douglas County: 72.7 %Elbert County: 96.4 %El Paso County: 79.7 %Fremont County: 100 %Garfield County: 77.8 %Gunnison County: 78 %Jackson County: 98.3 %Jefferson County: 72.1 %La Plata County: 69.9 %Larimer County: 60 %Logan County: 71.7 %Mesa County: 59.5 %Montezuma County: 60.3 %Morgan County: 79.5 %Park County: 53.3 %Pitkin County: 60.1 %Prowers County: 94.5 %Pueblo County: 71.1 %Routt County: 94.6 %San Juan County: 97.5 %San Miguel County: 96.5 %Summit County: 98.5 %Weld County: 72.6 %Kent County: 66.4 %New Castle County: 41.4 %Sussex County: 65.1 %District of Columbia: 35.3 %Alachua County: 74.5 %Baker County: 98 %Bay County: 61.6 %Brevard County: 62.2 %Broward County: 54 %Citrus County: 79 %Collier County: 69.3 %Columbia County: 45.5 %Duval County: 44.4 %Escambia County: 45.8 %Hamilton County: 50.6 %Highlands County: 96.3 %Hillsborough County: 32.9 %Holmes County: 50.7 %Indian River County: 93.5 %Lake County: 64.7 %Lee County: 65.2 %Leon County: 34.8 %Liberty County: 97.3 %Manatee County: 98.5 %Marion County: 61.1 %Miami-Dade County: 40.8 %Okaloosa County: 92.5 %Orange County: 48.2 %Osceola County: 95.1 %Palm Beach County: 77.3 %Pasco County: 88.2 %Pinellas County: 48.5 %Polk County: 59.5 %Putnam County: 100 %St. Lucie County: 64.1 %Santa Rosa County: 55.6 %Sarasota County: 14 %Seminole County: 86.8 %Volusia County: 63.6 %Wakulla County: 90.1 %Bibb County: 32.7 %Charlton County: 78.3 %Chatham County: 43.8 %Chattooga County: 88.9 %Clarke County: 46.6 %Clayton County: 32.8 %Cobb County: 36.3 %Coffee County: 50.9 %Columbia County: 87 %Coweta County: 48.5 %Dawson County: 85.5 %DeKalb County: 27.4 %Dougherty County: 24.3 %Douglas County: 78.4 %Floyd County: 30.2 %Fulton County: 19.2 %Glynn County: 82.9 %Gwinnett County: 43.3 %Hall County: 32.2 %Henry County: 47.4 %Houston County: 21.8 %Lowndes County: 21.9 %Murray County: 78.6 %Muscogee County: 44.1 %Paulding County: 54.2 %Pike County: 88.1 %Richmond County: 41.6 %Rockdale County: 85.5 %Sumter County: 94.8 %Walker County: 32.3 %Washington County: 45.2 %Wilkinson County: 42.9 %Hawaii County: 5.8 %Honolulu County: 79.5 %Maui County: 94.4 %Ada County: 46.3 %Bannock County: 87.3 %Benewah County: 65.1 %Boise County: 84 %Bonner County: 98.9 %Butte County: 92.9 %Canyon County: 90.7 %Custer County: 99 %Franklin County: 76.2 %Idaho County: 97.6 %Kootenai County: 81.9 %Latah County: 95.3 %Lemhi County: 67.2 %Nez Perce County: 91.6 %Power County: 92.3 %Shoshone County: 26.6 %Twin Falls County: 80.7 %Valley County: 84.8 %Adams County: 89 %Champaign County: 74.8 %Clark County: 89.3 %Cook County: 10.7 %DuPage County: 32.6 %Effingham County: 85.8 %Hamilton County: 72.1 %Jackson County: 100 %Jersey County: 77.8 %Jo Daviess County: 92.9 %Kane County: 85.8 %Lake County: 84.1 %LaSalle County: 49.3 %McHenry County: 48.8 %McLean County: 73.6 %Macon County: 44.4 %Macoupin County: 91.5 %Madison County: 23 %Peoria County: 40.8 %Randolph County: 90.7 %Rock Island County: 91.8 %St. Clair County: 52.6 %Sangamon County: 80.3 %Will County: 86.3 %Winnebago County: 82.5 %Allen County: 21.6 %Boone County: 74 %Carroll County: 86.1 %Clark County: 25.7 %Delaware County: 61.2 %Dubois County: 25.2 %Elkhart County: 67.9 %Floyd County: 24.1 %Gibson County: 39 %Greene County: 74.5 %Hamilton County: 70.5 %Hancock County: 77.3 %Hendricks County: 81.6 %Henry County: 39 %Howard County: 42.7 %Huntington County: 86.3 %Jackson County: 87.4 %Johnson County: 76 %Knox County: 72.3 %Lake County: 26 %LaPorte County: 68.7 %Madison County: 64.2 %Marion County: 16.2 %Monroe County: 30.2 %Morgan County: 77.7 %Perry County: 85.4 %Porter County: 28.8 %Posey County: 83.6 %St. Joseph County: 41.4 %Shelby County: 69.9 %Spencer County: 32.4 %Tippecanoe County: 30.3 %Vanderburgh County: 41.9 %Vigo County: 59.5 %Wabash County: 89.9 %Warrick County: 84.7 %Washington County: 51.4 %Whitley County: 91.7 %Black Hawk County: 46.3 %Bremer County: 90.2 %Cerro Gordo County: 93.4 %Clinton County: 32.6 %Delaware County: 100 %Harrison County: 88.8 %Johnson County: 38.2 %Lee County: 47.5 %Linn County: 45.5 %Montgomery County: 76.8 %Muscatine County: 38.6 %Palo Alto County: 75.4 %Polk County: 51.2 %Pottawattamie County: 76.8 %Scott County: 34 %Story County: 92.5 %Van Buren County: 75.3 %Warren County: 93.9 %Woodbury County: 63.4 %Wright County: 55.8 %Brown County: 73.5 %Chase County: 77.7 %Ford County: 97.2 %Johnson County: 80.8 %Leavenworth County: 92.2 %Linn County: 81.3 %Montgomery County: 99.7 %Neosho County: 100 %Riley County: 90.8 %Sedgwick County: 73.2 %Shawnee County: 81.1 %Sherman County: 96.1 %Sumner County: 79.2 %Trego County: 81.6 %Wyandotte County: 52.9 %Bell County: 76.5 %Boone County: 90 %Boyd County: 48.2 %Bullitt County: 64.3 %Campbell County: 57.3 %Carter County: 72.9 %Christian County: 68.3 %Daviess County: 44.4 %Edmonson County: 78.1 %Fayette County: 48.8 %Franklin County: 41 %Greenup County: 88.9 %Hancock County: 83.1 %Hardin County: 55.8 %Henderson County: 52.4 %Jefferson County: 76.2 %Jessamine County: 87.1 %Kenton County: 55.9 %Livingston County: 89 %McCracken County: 54.9 %Madison County: 41.4 %Marshall County: 100 %Morgan County: 87.1 %Ohio County: 48.7 %Oldham County: 84.8 %Perry County: 71.4 %Pike County: 62.5 %Pulaski County: 91 %Simpson County: 81.6 %Trigg County: 76.5 %Warren County: 59.1 %Washington County: 87.2 %Ascension Parish: 90.7 %Bossier Parish: 58.2 %Caddo Parish: 74 %Calcasieu Parish: 49 %East Baton Rouge Parish: 41.6 %Iberville Parish: 69.3 %Jefferson Parish: 51.2 %Lafayette Parish: 70.7 %Lafourche Parish: 63.6 %Livingston Parish: 58.4 %Orleans Parish: 47.1 %Ouachita Parish: 81.1 %Pointe Coupee Parish: 91 %Rapides Parish: 65.5 %St. Bernard Parish: 34.5 %St. Charles Parish: 88.4 %St. James Parish: 89.5 %St. John the Baptist Parish: 89.1 %St. Tammany Parish: 59.7 %Tangipahoa Parish: 59.8 %Terrebonne Parish: 66.7 %West Baton Rouge Parish: 28.1 %Winn Parish: 74.8 %Androscoggin County: 97.2 %Aroostook County: 84.4 %Cumberland County: 91.8 %Hancock County: 88.2 %Kennebec County: 94.8 %Knox County: 92.3 %Oxford County: 97.2 %Penobscot County: 94.5 %Sagadahoc County: 96.2 %Washington County: 97 %York County: 93.4 %Anne Arundel County: 40.7 %Baltimore County: 42.7 %Calvert County: 77.5 %Carroll County: 86.3 %Cecil County: 45.6 %Charles County: 78.5 %Dorchester County: 87.3 %Frederick County: 83.2 %Garrett County: 80.8 %Harford County: 59.2 %Kent County: 84.7 %Montgomery County: 44.1 %Prince George's County: 43.3 %Washington County: 69.6 %Worcester County: 89.6 %Baltimore city: 32.3 %Barnstable County: 83.5 %Berkshire County: 51.1 %Bristol County: 67.8 %Dukes County: 83.4 %Essex County: 59.5 %Hampden County: 47.1 %Hampshire County: 58.4 %Middlesex County: 88.5 %Norfolk County: 73.4 %Plymouth County: 65.3 %Suffolk County: 39.7 %Worcester County: 60.5 %Allegan County: 67.1 %Bay County: 62.9 %Benzie County: 88 %Berrien County: 65 %Cass County: 73.2 %Chippewa County: 33.3 %Clinton County: 86.1 %Emmet County: 76.9 %Genesee County: 70.5 %Huron County: 91.4 %Ingham County: 70 %Kalamazoo County: 63.4 %Kent County: 67.7 %Keweenaw County: 91.3 %Lenawee County: 63.7 %Macomb County: 69.7 %Manistee County: 82.7 %Mason County: 88 %Missaukee County: 82.5 %Monroe County: 49.2 %Muskegon County: 65.3 %Oakland County: 70.1 %Ottawa County: 68.1 %St. Clair County: 69.7 %Schoolcraft County: 91 %Tuscola County: 94.2 %Washtenaw County: 76.6 %Wayne County: 40.3 %Wexford County: 95.6 %Anoka County: 44.7 %Becker County: 80.8 %Carlton County: 97.6 %Cass County: 92.9 %Cook County: 94.4 %Crow Wing County: 70.6 %Dakota County: 54.2 %Goodhue County: 89 %Hennepin County: 53.7 %Lake County: 77.3 %Lyon County: 54.4 %Mille Lacs County: 87.6 %Olmsted County: 52.6 %Ramsey County: 48.8 %Rock County: 74.5 %St. Louis County: 59.7 %Scott County: 79 %Stearns County: 72.1 %Washington County: 79.4 %Winona County: 78.8 %Wright County: 56.4 %Adams County: 71.4 %Bolivar County: 48.5 %DeSoto County: 45.8 %Forrest County: 31.4 %Grenada County: 53.3 %Hancock County: 76 %Harrison County: 36.6 %Hinds County: 37.7 %Jackson County: 79.3 %Jones County: 26.8 %Lauderdale County: 40.6 %Lee County: 45.5 %Lowndes County: 51.3 %Yalobusha County: 95.1 %Andrew County: 84.4 %Boone County: 91.1 %Buchanan County: 34.2 %Callaway County: 91.1 %Cass County: 71.6 %Cedar County: 58.5 %Clay County: 47.1 %Clinton County: 80.8 %Greene County: 77.3 %Jackson County: 58.1 %Jasper County: 82.7 %Jefferson County: 35.9 %Lincoln County: 80 %Monroe County: 90.9 %Perry County: 75.8 %St. Charles County: 83.8 %Ste. Genevieve County: 74.2 %St. Louis County: 27.1 %Stoddard County: 66.7 %Taney County: 71.1 %St. Louis city: 21.9 %Cascade County: 62.7 %Fergus County: 99.1 %Flathead County: 33.4 %Gallatin County: 59.2 %Glacier County: 92 %Lake County: 100 %Lewis and Clark County: 74 %Lincoln County: 45.1 %Missoula County: 58 %Powell County: 99.1 %Ravalli County: 78.1 %Richland County: 82.1 %Roosevelt County: 99 %Rosebud County: 93.4 %Sanders County: 87.6 %Sheridan County: 100 %Silver Bow County: 72.5 %Yellowstone County: 92.1 %Cass County: 95.6 %Dawson County: 96.7 %Douglas County: 54.8 %Garden County: 95.7 %Hall County: 80.5 %Knox County: 95.8 %Lancaster County: 89 %Sarpy County: 69.1 %Scotts Bluff County: 92.4 %Sioux County: 83.3 %Thomas County: 94.8 %Washington County: 68.1 %Churchill County: 87.2 %Clark County: 26 %Douglas County: 100 %Elko County: 96.2 %Lyon County: 88.8 %Mineral County: 100 %Nye County: 93.2 %Washoe County: 62.2 %White Pine County: 76.3 %Carson City: 81.5 %Belknap County: 91.4 %Cheshire County: 58.9 %Coos County: 84.5 %Grafton County: 76 %Hillsborough County: 83 %Merrimack County: 79.3 %Rockingham County: 85.6 %Atlantic County: 62 %Bergen County: 35.3 %Burlington County: 100 %Camden County: 64.4 %Cumberland County: 43.6 %Essex County: 82.2 %Gloucester County: 76.6 %Hudson County: 39.7 %Hunterdon County: 57.1 %Mercer County: 55.1 %Middlesex County: 65.8 %Monmouth County: 92.3 %Morris County: 81.1 %Ocean County: 63 %Passaic County: 78.9 %Union County: 33.2 %Warren County: 64.1 %Bernalillo County: 29.6 %Catron County: 98.3 %Chaves County: 89.6 %Doña Ana County: 26.6 %Eddy County: 80.5 %Grant County: 95.1 %Lea County: 84.1 %Lincoln County: 99.1 %Los Alamos County: 99.1 %Luna County: 95.1 %McKinley County: 97.1 %Rio Arriba County: 100 %Sandoval County: 68.2 %San Juan County: 84.4 %Santa Fe County: 85.5 %Socorro County: 100 %Taos County: 95.3 %Valencia County: 88.5 %Albany County: 60 %Bronx County: 34.2 %Chautauqua County: 81.1 %Chemung County: 93.7 %Dutchess County: 93.4 %Erie County: 35.6 %Essex County: 79.7 %Franklin County: 97.5 %Hamilton County: 92 %Herkimer County: 93.4 %Jefferson County: 92.3 %Kings County: 40.3 %Madison County: 94.2 %Monroe County: 69 %Nassau County: 56.2 %New York County: 26.6 %Niagara County: 57.3 %Oneida County: 68.2 %Onondaga County: 87.9 %Orange County: 63.8 %Oswego County: 96.5 %Putnam County: 94.5 %Queens County: 43.3 %Rensselaer County: 93.4 %Richmond County: 51.2 %Rockland County: 80.7 %St. Lawrence County: 84.6 %Saratoga County: 92.6 %Schenectady County: 97.2 %Steuben County: 72.1 %Suffolk County: 78.9 %Tompkins County: 94.5 %Ulster County: 92.8 %Wayne County: 91.2 %Westchester County: 67.4 %Alamance County: 42.5 %Alexander County: 86.6 %Avery County: 83.7 %Buncombe County: 50.4 %Caldwell County: 89.2 %Carteret County: 94.2 %Caswell County: 43.4 %Catawba County: 36.7 %Chatham County: 77.6 %Cumberland County: 38.7 %Davidson County: 39.4 %Davie County: 78.6 %Duplin County: 71.6 %Durham County: 45.4 %Edgecombe County: 71.4 %Forsyth County: 29.6 %Franklin County: 84.9 %Gaston County: 43.9 %Graham County: 77.2 %Granville County: 79.4 %Guilford County: 44.2 %Haywood County: 65.9 %Henderson County: 100 %Hyde County: 83.6 %Jackson County: 74.3 %Johnston County: 71.2 %Lenoir County: 76.9 %Lincoln County: 80.4 %McDowell County: 50.5 %Macon County: 94.3 %Martin County: 61.7 %Mecklenburg County: 29.3 %Mitchell County: 53.6 %Montgomery County: 78.5 %New Hanover County: 67.1 %Person County: 83.2 %Pitt County: 74.7 %Robeson County: 53 %Rockingham County: 80.4 %Rowan County: 41.1 %Swain County: 52.3 %Union County: 80 %Wake County: 36.4 %Watauga County: 63.2 %Wayne County: 49.6 %Yancey County: 78.5 %Billings County: 97.5 %Burke County: 94.9 %Burleigh County: 83.3 %Cass County: 86.3 %Dunn County: 99.1 %McKenzie County: 97.5 %Mercer County: 97.3 %Oliver County: 97 %Ward County: 100 %Allen County: 81.5 %Ashtabula County: 81.8 %Athens County: 81.1 %Butler County: 59.8 %Clark County: 57.2 %Clermont County: 56.8 %Clinton County: 73.8 %Columbiana County: 98.4 %Crawford County: 90.4 %Cuyahoga County: 63.8 %Delaware County: 79.4 %Fayette County: 87.1 %Franklin County: 66.1 %Geauga County: 82.9 %Greene County: 59.5 %Hamilton County: 21.9 %Hancock County: 100 %Jefferson County: 60.5 %Knox County: 86.8 %Lake County: 72.3 %Lawrence County: 55.3 %Licking County: 79 %Lorain County: 70.3 %Lucas County: 61.1 %Madison County: 79 %Mahoning County: 58.6 %Medina County: 54.9 %Miami County: 80.4 %Montgomery County: 55.6 %Noble County: 77.3 %Portage County: 69.9 %Preble County: 61.3 %Scioto County: 79.2 %Stark County: 37.8 %Summit County: 35.3 %Trumbull County: 82.4 %Warren County: 53.4 %Washington County: 80.4 %Wood County: 83.6 %Adair County: 56.4 %Caddo County: 81.2 %Canadian County: 81.3 %Carter County: 55 %Cherokee County: 84.5 %Cleveland County: 41.4 %Comanche County: 33.3 %Creek County: 84.7 %Dewey County: 58.1 %Ellis County: 89.5 %Kay County: 27.5 %Lincoln County: 92.7 %Love County: 72.9 %McClain County: 81.3 %Mayes County: 69.9 %Muskogee County: 77.8 %Oklahoma County: 40.5 %Ottawa County: 47.8 %Pittsburg County: 40.5 %Sequoyah County: 82.6 %Tulsa County: 26.8 %Baker County: 67.6 %Benton County: 80.5 %Clackamas County: 84.4 %Columbia County: 82.5 %Crook County: 62.5 %Deschutes County: 84.6 %Douglas County: 73.3 %Grant County: 59.5 %Harney County: 59.4 %Jackson County: 59.5 %Jefferson County: 68.8 %Josephine County: 64.4 %Klamath County: 47.8 %Lake County: 67.8 %Lane County: 43.8 %Linn County: 55.3 %Marion County: 72.3 %Multnomah County: 63.3 %Umatilla County: 64.1 %Union County: 69.3 %Wallowa County: 78.8 %Wasco County: 75.9 %Washington County: 61.4 %Yamhill County: 87.2 %Adams County: 42.5 %Allegheny County: 5.5 %Armstrong County: 52 %Beaver County: 35.9 %Berks County: 48.2 %Blair County: 92.6 %Bucks County: 49.6 %Cambria County: 31.8 %Centre County: 55.1 %Chester County: 23.3 %Clearfield County: 85 %Cumberland County: 27.9 %Dauphin County: 41.8 %Delaware County: 33.3 %Elk County: 92.4 %Erie County: 57 %Franklin County: 94.2 %Greene County: 81.3 %Indiana County: 86.3 %Lackawanna County: 56.2 %Lancaster County: 37.8 %Lawrence County: 94.2 %Lehigh County: 92.8 %Luzerne County: 96.7 %Lycoming County: 92.8 %Mercer County: 43.6 %Monroe County: 95.2 %Montgomery County: 49.1 %Northampton County: 42.2 %Perry County: 94.7 %Philadelphia County: 26.3 %Somerset County: 90.8 %Tioga County: 91.5 %Washington County: 20 %Westmoreland County: 27 %York County: 35.6 %Kent County: 79.8 %Providence County: 63.8 %Washington County: 83.1 %Abbeville County: 94.2 %Aiken County: 85.4 %Anderson County: 93.4 %Berkeley County: 97.8 %Charleston County: 38.6 %Cherokee County: 96.3 %Chesterfield County: 75.3 %Colleton County: 94.2 %Darlington County: 92.7 %Edgefield County: 76.6 %Florence County: 43.1 %Georgetown County: 96.2 %Greenville County: 32.9 %Horry County: 97.3 %Lexington County: 41.4 %Oconee County: 80.6 %Pickens County: 88.5 %Richland County: 47.7 %Spartanburg County: 40.9 %York County: 94.4 %Brookings County: 87.2 %Brown County: 70.5 %Codington County: 87.3 %Custer County: 89.6 %Jackson County: 95.3 %Meade County: 97.2 %Minnehaha County: 59.2 %Pennington County: 67.7 %Union County: 60.5 %Anderson County: 84.3 %Blount County: 76.7 %Bradley County: 100 %Claiborne County: 93.3 %Davidson County: 31.8 %DeKalb County: 87.5 %Hamilton County: 39.1 %Jefferson County: 79.5 %Knox County: 76.3 %Lawrence County: 44.3 %Loudon County: 84.6 %McMinn County: 100 %Madison County: 100 %Meigs County: 76.9 %Montgomery County: 46.8 %Roane County: 77.4 %Rutherford County: 84.1 %Sevier County: 65.5 %Shelby County: 34.5 %Sullivan County: 86 %Sumner County: 76.7 %Union County: 98.9 %Williamson County: 86.3 %Wilson County: 83.2 %Bell County: 90 %Bexar County: 36.7 %Bowie County: 49.1 %Brazoria County: 84.4 %Brewster County: 78.7 %Cameron County: 42.7 %Collin County: 77.2 %Culberson County: 97.3 %Dallas County: 34 %Denton County: 48.2 %Ector County: 67.9 %Ellis County: 44.1 %El Paso County: 22.5 %Fayette County: 61.8 %Galveston County: 52.5 %Gregg County: 85.5 %Harris County: 12.3 %Harrison County: 58.1 %Hays County: 85.6 %Hidalgo County: 41.4 %Hood County: 81.3 %Hunt County: 87.4 %Jeff Davis County: 86.9 %Jefferson County: 41.1 %Johnson County: 80.4 %Kaufman County: 52.6 %Kleberg County: 45.3 %Lubbock County: 76.5 %McLennan County: 54.5 %Maverick County: 63.5 %Montgomery County: 44.4 %Navarro County: 49.7 %Nueces County: 49.6 %Orange County: 73.4 %Parker County: 78.8 %Polk County: 86 %Potter County: 87.9 %Randall County: 87.3 %Rockwall County: 80.1 %Smith County: 81.6 %Tarrant County: 34.5 %Travis County: 50.1 %Victoria County: 92.3 %Webb County: 48.5 %Wichita County: 79.9 %Box Elder County: 54 %Cache County: 27.4 %Davis County: 73.8 %Garfield County: 96.6 %Salt Lake County: 31 %San Juan County: 63.2 %Tooele County: 28.5 %Uintah County: 67.7 %Utah County: 40 %Washington County: 67.5 %Wayne County: 99.1 %Weber County: 27.9 %Bennington County: 76.3 %Chittenden County: 67.1 %Rutland County: 60 %Albemarle County: 73.1 %Arlington County: 75.9 %Caroline County: 88.4 %Carroll County: 100 %Charles City County: 80.8 %Chesterfield County: 68.7 %Culpeper County: 100 %Fairfax County: 48.8 %Fauquier County: 92 %Frederick County: 68.6 %Giles County: 87.3 %Hanover County: 82.2 %Henrico County: 50.7 %King William County: 100 %Loudoun County: 77.1 %Madison County: 84.5 %Page County: 73.4 %Prince Edward County: 92.4 %Prince William County: 91.2 %Roanoke County: 92.1 %Rockbridge County: 82.5 %Rockingham County: 78.2 %Stafford County: 90.2 %Warren County: 100 %Wythe County: 91.1 %Alexandria city: 91.2 %Bristol city: 53.4 %Fredericksburg city: 100 %Hampton city: 89.9 %Hopewell city: 100 %Lynchburg city: 59.8 %Newport News city: 80 %Norfolk city: 80.5 %Richmond city: 98.1 %Roanoke city: 54.2 %Salem city: 47.9 %Suffolk city: 82.7 %Virginia Beach city: 56.3 %Winchester city: 100 %Adams County: 92.1 %Asotin County: 66.9 %Benton County: 78.7 %Chelan County: 63 %Clallam County: 68.1 %Clark County: 54.5 %Columbia County: 92 %Cowlitz County: 85.1 %Franklin County: 88.5 %Grant County: 86.2 %Grays Harbor County: 75.3 %Jefferson County: 79.1 %King County: 17.3 %Kitsap County: 69.1 %Kittitas County: 73.8 %Klickitat County: 87.7 %Lewis County: 97.5 %Mason County: 77.2 %Okanogan County: 54.9 %Pend Oreille County: 95 %Pierce County: 52.9 %Skagit County: 89.8 %Snohomish County: 51 %Spokane County: 55.9 %Stevens County: 59.5 %Thurston County: 77.2 %Walla Walla County: 75.6 %Whatcom County: 78.9 %Whitman County: 90.4 %Yakima County: 61.4 %Berkeley County: 63.9 %Brooke County: 75.6 %Cabell County: 65.9 %Gilmer County: 97.5 %Greenbrier County: 90.4 %Hancock County: 73.2 %Harrison County: 39.8 %Kanawha County: 30.4 %Marion County: 33.9 %Marshall County: 27.7 %Monongalia County: 42.1 %Ohio County: 55.3 %Raleigh County: 53.1 %Tucker County: 87.8 %Wood County: 32.6 %Ashland County: 94.5 %Brown County: 54.3 %Columbia County: 87.8 %Dane County: 51 %Dodge County: 78.2 %Door County: 86.5 %Eau Claire County: 79.5 %Florence County: 96.5 %Fond du Lac County: 87.1 %Forest County: 93.6 %Grant County: 51.6 %Jefferson County: 82.8 %Kenosha County: 70.4 %Kewaunee County: 86.6 %La Crosse County: 80.1 %Manitowoc County: 76.9 %Marathon County: 92.2 %Milwaukee County: 73.4 %Oneida County: 92.4 %Outagamie County: 56.2 %Ozaukee County: 73.8 %Racine County: 87 %Rock County: 84.9 %St. Croix County: 78.3 %Sauk County: 79.6 %Sheboygan County: 85.6 %Taylor County: 85 %Vernon County: 91 %Vilas County: 85.6 %Walworth County: 79.6 %Washington County: 89.1 %Waukesha County: 72.6 %Albany County: 72.3 %Campbell County: 65.5 %Carbon County: 98.8 %Converse County: 92.6 %Crook County: 86.1 %Fremont County: 68.7 %Johnson County: 100 %Laramie County: 99.2 %Lincoln County: 86.3 %Natrona County: 97.5 %Park County: 96.7 %Platte County: 93.4 %Sheridan County: 86.8 %Sublette County: 73.4 %Sweetwater County: 74.8 %Teton County: 89.3 %Uinta County: 93.4 %

Boundaries: U.S. Census Bureau cartographic boundary files.