US counties by share of days with good air quality (US EPA AQI), 2010

Aleutians East Borough 100%, the highest of 1055 counties, 2010

Baldwin County: 58.8 %Clay County: 40.7 %Colbert County: 34.9 %DeKalb County: 63.4 %Elmore County: 75.1 %Etowah County: 19 %Houston County: 35 %Jefferson County: 15.1 %Lawrence County: 58 %Madison County: 61.2 %Mobile County: 67.5 %Montgomery County: 29.1 %Morgan County: 30.2 %Russell County: 50.9 %Shelby County: 54.7 %Sumter County: 85.1 %Talladega County: 31.6 %Tuscaloosa County: 12.9 %Walker County: 31 %Aleutians East Borough: 100 %Anchorage Municipality: 74 %Denali Borough: 100 %Fairbanks North Star Borough: 50.7 %Juneau City and Borough: 64.3 %Kenai Peninsula Borough: 100 %Matanuska-Susitna Borough: 87.4 %Yukon-Koyukuk Census Area: 97.4 %Apache County: 100 %Cochise County: 67.2 %Coconino County: 63.4 %Gila County: 65.5 %La Paz County: 56.8 %Maricopa County: 23.6 %Mohave County: 99.2 %Navajo County: 76.6 %Pima County: 55.9 %Pinal County: 24.1 %Santa Cruz County: 55.2 %Yavapai County: 83.3 %Yuma County: 72.3 %Arkansas County: 35.6 %Ashley County: 36.7 %Clark County: 86.4 %Crittenden County: 60 %Faulkner County: 34.2 %Garland County: 36.4 %Jackson County: 39.2 %Newton County: 76.2 %Phillips County: 32.5 %Polk County: 62.2 %Pope County: 32.8 %Pulaski County: 20.3 %Sebastian County: 31.8 %Union County: 31.7 %Van Buren County: 93.7 %Washington County: 69.9 %White County: 31.6 %Alameda County: 44.1 %Amador County: 83.7 %Butte County: 45.8 %Calaveras County: 68.2 %Colusa County: 87 %Contra Costa County: 78.9 %Del Norte County: 99.1 %El Dorado County: 68.5 %Fresno County: 13.2 %Glenn County: 62.7 %Humboldt County: 95.3 %Imperial County: 41.4 %Inyo County: 64.7 %Kern County: 11.8 %Kings County: 8.2 %Lake County: 98.6 %Los Angeles County: 3.8 %Madera County: 57.1 %Marin County: 52.3 %Mariposa County: 41.6 %Mendocino County: 69.3 %Merced County: 29 %Mono County: 84.4 %Monterey County: 80 %Napa County: 58.9 %Nevada County: 66.3 %Orange County: 17.8 %Placer County: 34.8 %Plumas County: 56.5 %Riverside County: 3 %Sacramento County: 44.1 %San Benito County: 78.9 %San Bernardino County: 3.3 %San Diego County: 9.6 %San Francisco County: 46.8 %San Joaquin County: 46 %San Luis Obispo County: 34 %San Mateo County: 69.1 %Santa Barbara County: 60 %Santa Clara County: 49.6 %Santa Cruz County: 85.2 %Shasta County: 73.7 %Siskiyou County: 97 %Solano County: 66.3 %Sonoma County: 73.4 %Stanislaus County: 34.2 %Sutter County: 44.7 %Tehama County: 35.1 %Trinity County: 100 %Tulare County: 17.8 %Tuolumne County: 75.1 %Ventura County: 55.3 %Yolo County: 75.4 %Adams County: 71.3 %Alamosa County: 94.9 %Arapahoe County: 59.2 %Archuleta County: 96.1 %Boulder County: 61.9 %Chaffee County: 54.7 %Clear Creek County: 3.8 %Delta County: 96.5 %Denver County: 47.9 %Douglas County: 64.7 %Elbert County: 96.6 %El Paso County: 69.6 %Fremont County: 100 %Garfield County: 45.8 %Gunnison County: 84.4 %Jackson County: 100 %Jefferson County: 63.8 %La Plata County: 60.3 %Larimer County: 45.5 %Mesa County: 59.5 %Montezuma County: 72.6 %Park County: 48.7 %Pitkin County: 59.1 %Prowers County: 93.4 %Pueblo County: 90.1 %Rio Blanco County: 68.7 %Routt County: 94.3 %San Juan County: 97.5 %San Miguel County: 87.8 %Summit County: 99.7 %Teller County: 48.5 %Weld County: 58.1 %Kent County: 62.9 %New Castle County: 35.9 %Sussex County: 55.9 %District of Columbia: 37.5 %Alachua County: 58.9 %Baker County: 92.6 %Bay County: 45.8 %Brevard County: 54.5 %Broward County: 53.2 %Citrus County: 66.4 %Collier County: 60.2 %Columbia County: 40.7 %Duval County: 47.1 %Escambia County: 39.5 %Hamilton County: 45.9 %Highlands County: 89.7 %Hillsborough County: 29.6 %Holmes County: 37.8 %Indian River County: 85 %Lake County: 54.5 %Lee County: 60.3 %Leon County: 31 %Liberty County: 90.4 %Manatee County: 84.7 %Marion County: 53.4 %Martin County: 60.3 %Miami-Dade County: 34.5 %Okaloosa County: 84.9 %Orange County: 47.1 %Osceola County: 89.6 %Palm Beach County: 54 %Pasco County: 83.3 %Pinellas County: 41.6 %Polk County: 49.3 %Putnam County: 99.4 %St. Lucie County: 60.1 %Santa Rosa County: 46 %Sarasota County: 18.1 %Seminole County: 79.7 %Volusia County: 59.2 %Wakulla County: 83.1 %Bibb County: 23.1 %Charlton County: 73.9 %Chatham County: 42.3 %Chattooga County: 76.9 %Clarke County: 41.9 %Clayton County: 25 %Cobb County: 30.8 %Coffee County: 54.2 %Columbia County: 74.5 %Coweta County: 42.7 %Dawson County: 76.6 %DeKalb County: 18.1 %Dougherty County: 31.7 %Douglas County: 65.2 %Floyd County: 14.9 %Fulton County: 23.8 %Glynn County: 77.1 %Gwinnett County: 39.7 %Hall County: 26.6 %Henry County: 43 %Houston County: 23.9 %Lowndes County: 13.9 %Murray County: 65.1 %Muscogee County: 35.6 %Paulding County: 45.2 %Pike County: 73.5 %Richmond County: 37.9 %Rockdale County: 78.5 %Sumter County: 80.8 %Walker County: 27.6 %Washington County: 43.8 %Wilkinson County: 19.8 %Hawaii County: 3 %Honolulu County: 52.1 %Maui County: 93.9 %Ada County: 27.9 %Bannock County: 91.8 %Benewah County: 59 %Bonner County: 99.4 %Butte County: 86.4 %Canyon County: 72.8 %Cassia County: 80.1 %Custer County: 100 %Franklin County: 27.3 %Idaho County: 95.9 %Kootenai County: 97.2 %Latah County: 94.2 %Lemhi County: 58 %Nez Perce County: 90.2 %Power County: 100 %Shoshone County: 44.4 %Twin Falls County: 88 %Adams County: 85 %Champaign County: 79.5 %Clark County: 83.8 %Cook County: 11.8 %DuPage County: 36.2 %Effingham County: 80.5 %Hamilton County: 61 %Jackson County: 100 %Jersey County: 75.2 %Jo Daviess County: 91.6 %Kane County: 83.6 %Lake County: 78.6 %LaSalle County: 63.6 %McHenry County: 62.2 %McLean County: 74.2 %Macon County: 45.8 %Macoupin County: 89.2 %Madison County: 11.2 %Peoria County: 31.2 %Randolph County: 86.4 %Rock Island County: 91.5 %St. Clair County: 48.5 %Sangamon County: 74.5 %Will County: 83.2 %Winnebago County: 81.9 %Allen County: 21.4 %Boone County: 68.3 %Carroll County: 76.4 %Clark County: 20.6 %Delaware County: 57.7 %Dubois County: 25.2 %Elkhart County: 59 %Floyd County: 32.6 %Gibson County: 35.3 %Greene County: 62.7 %Hamilton County: 66.1 %Hancock County: 65.6 %Hendricks County: 79.8 %Henry County: 36.8 %Howard County: 39.3 %Huntington County: 87.4 %Jackson County: 73.8 %Johnson County: 72.1 %Knox County: 69.6 %Lake County: 14.8 %LaPorte County: 60.7 %Madison County: 46.9 %Marion County: 14.5 %Monroe County: 32.8 %Morgan County: 89 %Perry County: 60.1 %Porter County: 29.3 %Posey County: 73.9 %St. Joseph County: 28.5 %Shelby County: 71.8 %Spencer County: 26.7 %Tippecanoe County: 26.6 %Vanderburgh County: 20.8 %Vigo County: 29.8 %Wabash County: 88.5 %Warrick County: 60.1 %Washington County: 39.1 %Whitley County: 50.2 %Black Hawk County: 44.7 %Bremer County: 87.4 %Cerro Gordo County: 95.6 %Clinton County: 18.9 %Delaware County: 99.1 %Harrison County: 84.5 %Johnson County: 23 %Lee County: 44.3 %Linn County: 39.7 %Montgomery County: 53.1 %Muscatine County: 27.7 %Palo Alto County: 59.8 %Polk County: 49.3 %Pottawattamie County: 69.2 %Scott County: 20.8 %Story County: 93.5 %Tama County: 64.3 %Van Buren County: 71.5 %Warren County: 87.4 %Woodbury County: 56.1 %Brown County: 71.6 %Chase County: 76.9 %Ford County: 100 %Johnson County: 74.1 %Leavenworth County: 86.8 %Linn County: 77.5 %Neosho County: 100 %Riley County: 86.9 %Sedgwick County: 64.1 %Shawnee County: 73.7 %Sherman County: 98 %Sumner County: 71.2 %Trego County: 74.2 %Wyandotte County: 46.8 %Bell County: 59.8 %Boone County: 78.8 %Boyd County: 47.4 %Bullitt County: 41.9 %Campbell County: 45.1 %Carter County: 60.8 %Christian County: 47.3 %Daviess County: 31.6 %Edmonson County: 65.9 %Fayette County: 42.5 %Franklin County: 36.1 %Greenup County: 73.3 %Hancock County: 62.7 %Hardin County: 41.7 %Henderson County: 46.8 %Jefferson County: 56.7 %Jessamine County: 68 %Kenton County: 50.3 %Livingston County: 76.7 %McCracken County: 49 %Madison County: 34.8 %Marshall County: 100 %Morgan County: 79.3 %Ohio County: 53 %Oldham County: 56.8 %Perry County: 59.9 %Pike County: 56.5 %Pulaski County: 75.2 %Simpson County: 65.8 %Trigg County: 61.8 %Warren County: 48.6 %Washington County: 75.1 %Ascension Parish: 83.6 %Bossier Parish: 45.9 %Caddo Parish: 64.2 %Calcasieu Parish: 40.3 %East Baton Rouge Parish: 24.9 %Iberville Parish: 61.1 %Jefferson Parish: 37.5 %Lafayette Parish: 22.2 %Lafourche Parish: 58.2 %Livingston Parish: 52.1 %Orleans Parish: 52.9 %Ouachita Parish: 58.4 %Pointe Coupee Parish: 79 %Rapides Parish: 58.8 %St. Bernard Parish: 22.5 %St. Charles Parish: 84.8 %St. James Parish: 86.2 %St. John the Baptist Parish: 81.4 %St. Tammany Parish: 50.6 %Tangipahoa Parish: 55.7 %Terrebonne Parish: 59.2 %West Baton Rouge Parish: 26 %Winn Parish: 63.5 %Androscoggin County: 73.2 %Aroostook County: 86.8 %Cumberland County: 75.9 %Hancock County: 86.6 %Kennebec County: 93.7 %Knox County: 90.1 %Oxford County: 99.6 %Penobscot County: 81.9 %Piscataquis County: 93.1 %Sagadahoc County: 94.4 %Washington County: 97.3 %York County: 86.9 %Anne Arundel County: 43.9 %Baltimore County: 59.9 %Calvert County: 57.1 %Carroll County: 60.4 %Cecil County: 47.6 %Charles County: 60.1 %Dorchester County: 76.6 %Frederick County: 55.1 %Garrett County: 54.5 %Harford County: 50.6 %Kent County: 57.9 %Montgomery County: 41.4 %Prince George's County: 36.7 %Washington County: 41.6 %Worcester County: 68.4 %Baltimore city: 35.3 %Barnstable County: 82.8 %Berkshire County: 64.4 %Bristol County: 63 %Dukes County: 78.6 %Essex County: 60.8 %Hampden County: 51.2 %Hampshire County: 74.8 %Middlesex County: 85.8 %Norfolk County: 77 %Plymouth County: 69.7 %Suffolk County: 35.1 %Worcester County: 52.1 %Allegan County: 63.9 %Bay County: 71.1 %Benzie County: 76.5 %Berrien County: 61.7 %Cass County: 73.9 %Chippewa County: 78 %Clinton County: 80.3 %Genesee County: 64 %Huron County: 84.7 %Ingham County: 77 %Kalamazoo County: 61.2 %Kent County: 75.1 %Keweenaw County: 91.1 %Lenawee County: 61.6 %Macomb County: 63.9 %Manistee County: 78.8 %Mason County: 84.2 %Missaukee County: 84.6 %Monroe County: 55.3 %Muskegon County: 67.1 %Oakland County: 62.1 %Ottawa County: 63.1 %St. Clair County: 66.3 %Schoolcraft County: 83.6 %Tuscola County: 90.3 %Washtenaw County: 75.4 %Wayne County: 35.9 %Wexford County: 93.5 %Anoka County: 44.1 %Becker County: 78.2 %Carlton County: 97.5 %Cass County: 100 %Cook County: 80.6 %Crow Wing County: 75.8 %Dakota County: 52.3 %Goodhue County: 90.4 %Hennepin County: 58.1 %Lake County: 85.4 %Lyon County: 43.7 %Mille Lacs County: 96.4 %Olmsted County: 51.1 %Ramsey County: 50.1 %Rock County: 73.1 %St. Louis County: 71.2 %Scott County: 78.1 %Stearns County: 68 %Washington County: 90.6 %Winona County: 75.4 %Wright County: 48.4 %Adams County: 65.4 %Bolivar County: 36.2 %DeSoto County: 37.8 %Forrest County: 30.4 %Grenada County: 48.7 %Hancock County: 66.7 %Harrison County: 36.7 %Hinds County: 35.6 %Jackson County: 72.5 %Jones County: 16.5 %Lauderdale County: 33.2 %Lee County: 34 %Yalobusha County: 88.3 %Andrew County: 79 %Boone County: 83.2 %Buchanan County: 36.7 %Callaway County: 80.4 %Cass County: 44.1 %Cedar County: 37.5 %Clay County: 47.7 %Clinton County: 71.5 %Greene County: 65.5 %Jackson County: 31.2 %Jasper County: 74.8 %Jefferson County: 37.6 %Lincoln County: 71.5 %Monroe County: 85.5 %Perry County: 61.2 %St. Charles County: 73 %Ste. Genevieve County: 67 %St. Louis County: 31 %Stoddard County: 51.4 %Taney County: 71.5 %St. Louis city: 18.1 %Cascade County: 71.2 %Fergus County: 97.5 %Flathead County: 51.5 %Gallatin County: 65.5 %Glacier County: 89.5 %Lake County: 98.1 %Lewis and Clark County: 68.9 %Lincoln County: 46.8 %Missoula County: 23 %Powder River County: 84.6 %Powell County: 95.5 %Ravalli County: 68.7 %Richland County: 88.2 %Roosevelt County: 92.8 %Rosebud County: 91.5 %Sanders County: 86.1 %Sheridan County: 94.7 %Silver Bow County: 61.9 %Yellowstone County: 87.4 %Cass County: 92.5 %Dawson County: 93.1 %Douglas County: 44.7 %Garden County: 94.8 %Hall County: 76.1 %Knox County: 92.8 %Lancaster County: 88.3 %Sarpy County: 32.4 %Scotts Bluff County: 83.3 %Thomas County: 94.5 %Washington County: 61.7 %Churchill County: 89.9 %Clark County: 32.3 %Douglas County: 100 %Elko County: 98 %Lyon County: 87 %Mineral County: 98.4 %Nye County: 91.7 %Washoe County: 60.5 %White Pine County: 76.1 %Carson City: 78.4 %Belknap County: 87.3 %Cheshire County: 64.7 %Coos County: 81.2 %Grafton County: 77 %Hillsborough County: 78.6 %Merrimack County: 72.7 %Rockingham County: 77.4 %Atlantic County: 63.8 %Bergen County: 73.4 %Camden County: 50.4 %Cumberland County: 65 %Essex County: 61.9 %Gloucester County: 69.6 %Hudson County: 47.1 %Hunterdon County: 54.7 %Mercer County: 53.2 %Middlesex County: 63.8 %Monmouth County: 83.8 %Morris County: 71.2 %Ocean County: 60.6 %Passaic County: 69.6 %Union County: 40.3 %Warren County: 59.5 %Bernalillo County: 21.1 %Catron County: 99.1 %Chaves County: 92.2 %Doña Ana County: 32.9 %Eddy County: 75.3 %Grant County: 79.5 %Lea County: 89.3 %Lincoln County: 97.1 %Los Alamos County: 100 %Luna County: 93.7 %McKinley County: 100 %Rio Arriba County: 99 %Sandoval County: 60.5 %San Juan County: 65.8 %Santa Fe County: 83.3 %Socorro County: 100 %Taos County: 97.7 %Valencia County: 84.7 %Albany County: 60 %Bronx County: 35.3 %Chautauqua County: 74.2 %Chemung County: 89 %Dutchess County: 88.6 %Erie County: 40.8 %Essex County: 77.8 %Franklin County: 99.7 %Hamilton County: 92.2 %Herkimer County: 92.5 %Jefferson County: 89 %Kings County: 52.2 %Madison County: 88.1 %Monroe County: 68.2 %Nassau County: 57.3 %New York County: 26.6 %Niagara County: 57.3 %Oneida County: 71.8 %Onondaga County: 84.4 %Orange County: 61.7 %Oswego County: 87.9 %Putnam County: 86.1 %Queens County: 44.7 %Rensselaer County: 87.1 %Richmond County: 55.9 %Rockland County: 67.9 %Saratoga County: 90.9 %Schenectady County: 93.4 %Steuben County: 71.2 %Suffolk County: 67.7 %Tompkins County: 86.4 %Ulster County: 87.3 %Wayne County: 87 %Westchester County: 65.2 %Alamance County: 39.7 %Alexander County: 61.7 %Avery County: 73.5 %Buncombe County: 44.5 %Caldwell County: 70.3 %Carteret County: 87.7 %Caswell County: 48.2 %Catawba County: 36.6 %Chatham County: 69.3 %Cumberland County: 39 %Davidson County: 34.9 %Davie County: 58.4 %Duplin County: 55.4 %Durham County: 41.5 %Edgecombe County: 55.9 %Forsyth County: 28.8 %Franklin County: 72.9 %Gaston County: 34.9 %Graham County: 55.1 %Granville County: 57 %Guilford County: 37.4 %Haywood County: 50.2 %Hyde County: 73.7 %Jackson County: 49.2 %Johnston County: 54.1 %Lenoir County: 61.2 %Lincoln County: 61.3 %McDowell County: 45.6 %Macon County: 90.7 %Martin County: 56.3 %Mecklenburg County: 25.8 %Mitchell County: 43.8 %Montgomery County: 66.8 %New Hanover County: 66.7 %Person County: 57.7 %Pitt County: 61.9 %Robeson County: 42.1 %Rockingham County: 54.7 %Rowan County: 32.6 %Swain County: 42.1 %Union County: 62.9 %Wake County: 31.8 %Watauga County: 56.3 %Wayne County: 40.4 %Yancey County: 61.6 %Billings County: 94.4 %Burke County: 79.6 %Burleigh County: 69.1 %Cass County: 61.6 %Dunn County: 91.1 %McKenzie County: 82.1 %Mercer County: 80.3 %Oliver County: 94.8 %Ward County: 100 %Adams County: 21.3 %Allen County: 53.2 %Ashtabula County: 68.2 %Athens County: 80.3 %Butler County: 53.3 %Clark County: 35.1 %Clermont County: 23.8 %Clinton County: 54 %Columbiana County: 96.7 %Crawford County: 82.5 %Cuyahoga County: 21.9 %Delaware County: 65.1 %Fayette County: 78.7 %Franklin County: 35.3 %Geauga County: 64.5 %Greene County: 37 %Hamilton County: 6.3 %Hancock County: 100 %Jefferson County: 33.2 %Knox County: 72 %Lake County: 46.3 %Lawrence County: 23.2 %Licking County: 60.3 %Lorain County: 39.3 %Lucas County: 43.1 %Madison County: 62.9 %Mahoning County: 34.5 %Medina County: 57.1 %Miami County: 68.5 %Montgomery County: 32.3 %Noble County: 68.2 %Portage County: 67.7 %Preble County: 35.4 %Scioto County: 78.6 %Stark County: 26.8 %Summit County: 21.9 %Trumbull County: 41.4 %Warren County: 23 %Washington County: 60.7 %Wood County: 74.3 %Adair County: 24.7 %Caddo County: 79.6 %Canadian County: 84.9 %Carter County: 65.8 %Cherokee County: 77.2 %Cleveland County: 43.1 %Comanche County: 47.7 %Creek County: 83.7 %Dewey County: 69 %Ellis County: 88.2 %Jefferson County: 83.1 %Kay County: 47.5 %Lincoln County: 94.5 %Love County: 78.3 %McClain County: 87.3 %McCurtain County: 85.9 %Mayes County: 61.8 %Muskogee County: 73 %Oklahoma County: 38.6 %Osage County: 87.2 %Ottawa County: 46.8 %Pittsburg County: 43.3 %Sequoyah County: 78.3 %Tulsa County: 23 %Baker County: 75 %Benton County: 90.9 %Clackamas County: 94.8 %Columbia County: 95.3 %Crook County: 77.4 %Deschutes County: 89.9 %Douglas County: 87.1 %Grant County: 66.3 %Harney County: 62.3 %Jackson County: 71.8 %Jefferson County: 71.5 %Josephine County: 78.6 %Klamath County: 63.1 %Lake County: 76.6 %Lane County: 55.3 %Linn County: 61.6 %Marion County: 79.7 %Multnomah County: 77.5 %Umatilla County: 67.1 %Union County: 71.5 %Wallowa County: 80.9 %Wasco County: 80.5 %Washington County: 76.2 %Yamhill County: 93.4 %Adams County: 38.9 %Allegheny County: 13.7 %Armstrong County: 32 %Beaver County: 39.5 %Berks County: 52.1 %Blair County: 78.1 %Bucks County: 43.6 %Cambria County: 28.5 %Centre County: 51.2 %Chester County: 33.3 %Clearfield County: 65.5 %Cumberland County: 27.1 %Dauphin County: 45.2 %Delaware County: 36.2 %Elk County: 85.2 %Erie County: 49.6 %Franklin County: 71.4 %Greene County: 68.5 %Indiana County: 62.1 %Lackawanna County: 57 %Lancaster County: 40.8 %Lawrence County: 84.7 %Lehigh County: 76.6 %Luzerne County: 89.3 %Lycoming County: 76.9 %Mercer County: 47.4 %Monroe County: 57.7 %Montgomery County: 47.7 %Northampton County: 30.7 %Perry County: 86.1 %Philadelphia County: 34.2 %Somerset County: 82.4 %Tioga County: 69.6 %Washington County: 26.8 %Westmoreland County: 27.5 %York County: 38.1 %Kent County: 78.1 %Providence County: 62.5 %Washington County: 78.5 %Abbeville County: 79.7 %Aiken County: 81.4 %Anderson County: 75.1 %Berkeley County: 92.9 %Charleston County: 43 %Cherokee County: 78.9 %Chesterfield County: 65.2 %Colleton County: 90.1 %Darlington County: 80.7 %Edgefield County: 72.8 %Florence County: 40.9 %Georgetown County: 93.4 %Greenville County: 30.1 %Horry County: 85.4 %Lexington County: 35.9 %Oconee County: 78 %Pickens County: 77.3 %Richland County: 38.1 %Spartanburg County: 33.8 %York County: 88.9 %Brookings County: 83.8 %Brown County: 67.2 %Codington County: 85.2 %Custer County: 90.1 %Jackson County: 89.9 %Meade County: 96.7 %Minnehaha County: 52.1 %Pennington County: 81.6 %Union County: 56.7 %Anderson County: 68.9 %Blount County: 55.9 %Bradley County: 100 %Claiborne County: 85.5 %Davidson County: 25.8 %DeKalb County: 84.9 %Hamilton County: 45.2 %Jefferson County: 63.5 %Knox County: 64.9 %Lawrence County: 39.7 %Loudon County: 66.2 %McMinn County: 99.7 %Madison County: 100 %Meigs County: 63.7 %Montgomery County: 33.9 %Roane County: 30.2 %Rutherford County: 67.5 %Sevier County: 50.4 %Shelby County: 24.4 %Sullivan County: 75.3 %Sumner County: 55.1 %Union County: 93.1 %Williamson County: 67.5 %Wilson County: 64.3 %Bell County: 87.3 %Bexar County: 45.8 %Bowie County: 29.3 %Brazoria County: 83.3 %Brewster County: 77.5 %Cameron County: 54.6 %Collin County: 81.1 %Culberson County: 95.6 %Dallas County: 37 %Denton County: 51.2 %Ector County: 73.7 %Ellis County: 52.9 %El Paso County: 26 %Fayette County: 69.5 %Galveston County: 63.7 %Gregg County: 80.8 %Harris County: 15.6 %Harrison County: 44.1 %Hays County: 81.8 %Hidalgo County: 51.4 %Hood County: 89.8 %Hunt County: 89 %Jeff Davis County: 94.5 %Jefferson County: 36.2 %Johnson County: 87.3 %Kaufman County: 55.3 %Kleberg County: 55.7 %Lubbock County: 83 %McLennan County: 69 %Maverick County: 70.6 %Montgomery County: 42.5 %Navarro County: 53.8 %Nueces County: 57.6 %Orange County: 44.4 %Parker County: 89 %Polk County: 83.6 %Potter County: 89.2 %Randall County: 91.7 %Rockwall County: 84 %Smith County: 81.4 %Tarrant County: 37 %Travis County: 60.3 %Victoria County: 91.2 %Webb County: 54.8 %Wichita County: 81.9 %Box Elder County: 60.7 %Cache County: 32.6 %Daggett County: 75.8 %Davis County: 78.6 %Garfield County: 99.1 %Salt Lake County: 45.5 %San Juan County: 68.9 %Tooele County: 47.7 %Uintah County: 42.7 %Utah County: 40.3 %Washington County: 57.5 %Wayne County: 100 %Weber County: 36.7 %Bennington County: 77.7 %Chittenden County: 71 %Rutland County: 63.8 %Albemarle County: 57.9 %Arlington County: 66 %Caroline County: 61.5 %Carroll County: 100 %Charles City County: 67.4 %Chesterfield County: 57.8 %Culpeper County: 100 %Fairfax County: 47.1 %Fauquier County: 78.6 %Frederick County: 59.4 %Giles County: 72.7 %Hanover County: 54 %Henrico County: 42.7 %King William County: 100 %Loudoun County: 67.5 %Madison County: 66.4 %Page County: 57.4 %Prince Edward County: 83.9 %Prince William County: 80.3 %Roanoke County: 79.1 %Rockbridge County: 65.3 %Rockingham County: 66.6 %Stafford County: 64 %Warren County: 100 %Wythe County: 75.7 %Alexandria city: 66.6 %Bristol city: 34.7 %Fredericksburg city: 100 %Hampton city: 64.2 %Hopewell city: 100 %Lynchburg city: 53 %Newport News city: 86.3 %Norfolk city: 49.2 %Richmond city: 96.2 %Roanoke city: 47.4 %Salem city: 43.7 %Suffolk city: 60.3 %Virginia Beach city: 52.3 %Winchester city: 100 %Adams County: 94.3 %Asotin County: 77.2 %Benton County: 86 %Chelan County: 68.8 %Clallam County: 86.6 %Clark County: 83 %Columbia County: 92.1 %Cowlitz County: 92.9 %Franklin County: 90.4 %Grant County: 87.8 %Grays Harbor County: 97.3 %Jefferson County: 92.7 %King County: 60.5 %Kitsap County: 79.3 %Kittitas County: 74 %Klickitat County: 91 %Lewis County: 92.1 %Mason County: 86.6 %Okanogan County: 61.1 %Pend Oreille County: 96.1 %Pierce County: 67.4 %Skagit County: 92.1 %Snohomish County: 73.3 %Spokane County: 64.7 %Stevens County: 61.1 %Thurston County: 93 %Walla Walla County: 77.8 %Whatcom County: 87.6 %Whitman County: 91.8 %Yakima County: 66.8 %Berkeley County: 49.6 %Brooke County: 71.5 %Cabell County: 52.7 %Gilmer County: 95.4 %Greenbrier County: 73.5 %Hancock County: 63.8 %Harrison County: 35.1 %Kanawha County: 60 %Marion County: 30.7 %Marshall County: 27.7 %Monongalia County: 55.2 %Ohio County: 44.6 %Raleigh County: 46.7 %Tucker County: 78.9 %Wood County: 49.4 %Ashland County: 92.8 %Brown County: 56.7 %Chippewa County: 100 %Columbia County: 88.8 %Dane County: 33.1 %Dodge County: 59 %Door County: 85.2 %Eau Claire County: 61.9 %Florence County: 92.1 %Fond du Lac County: 91.8 %Forest County: 90.6 %Grant County: 55.8 %Jefferson County: 86.6 %Kenosha County: 58.6 %Kewaunee County: 84.5 %La Crosse County: 69.7 %Manitowoc County: 78.4 %Marathon County: 93.8 %Milwaukee County: 61.6 %Oneida County: 90.5 %Outagamie County: 79.7 %Ozaukee County: 72.3 %Racine County: 75 %Rock County: 85.5 %St. Croix County: 76.5 %Sauk County: 78.9 %Sheboygan County: 77.2 %Taylor County: 88.7 %Vernon County: 89.8 %Vilas County: 89.1 %Walworth County: 84.2 %Washington County: 90.7 %Waukesha County: 68.7 %Albany County: 61.6 %Big Horn County: 97.9 %Campbell County: 62.2 %Carbon County: 75.6 %Converse County: 92.8 %Crook County: 87.5 %Fremont County: 62.5 %Johnson County: 100 %Laramie County: 98.3 %Lincoln County: 94.2 %Natrona County: 91.7 %Park County: 93.4 %Platte County: 96.7 %Sheridan County: 87.7 %Sublette County: 63.8 %Sweetwater County: 67.1 %Teton County: 76.4 %Uinta County: 78.6 %

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