US counties by share of days with good air quality (US EPA AQI), 2011

Barron County 100%, the highest of 1047 counties, 2011

Baldwin County: 62.8 %Clay County: 48.3 %Colbert County: 67.7 %DeKalb County: 68.8 %Elmore County: 79.3 %Etowah County: 65.5 %Houston County: 64 %Jefferson County: 17.5 %Lawrence County: 54.7 %Madison County: 58.6 %Mobile County: 61.8 %Montgomery County: 56.8 %Morgan County: 60.4 %Russell County: 52.2 %Shelby County: 58.5 %Sumter County: 87.9 %Talladega County: 31.8 %Tuscaloosa County: 73.8 %Walker County: 40.2 %Aleutians East Borough: 98 %Anchorage Municipality: 82.2 %Denali Borough: 99.5 %Fairbanks North Star Borough: 50.4 %Juneau City and Borough: 71.7 %Kenai Peninsula Borough: 100 %Matanuska-Susitna Borough: 72.1 %Yukon-Koyukuk Census Area: 99.2 %Apache County: 99.2 %Cochise County: 56.8 %Coconino County: 62.2 %Gila County: 57 %La Paz County: 53.1 %Maricopa County: 7.4 %Mohave County: 97.2 %Navajo County: 67.4 %Pima County: 45.5 %Pinal County: 17.8 %Santa Cruz County: 59.4 %Yavapai County: 69.1 %Yuma County: 69.1 %Arkansas County: 36 %Ashley County: 39 %Clark County: 92.2 %Crittenden County: 61.4 %Faulkner County: 30.2 %Garland County: 32 %Jackson County: 44.4 %Newton County: 72.3 %Phillips County: 39.5 %Polk County: 54.9 %Pope County: 24.4 %Pulaski County: 17.3 %Sebastian County: 29.4 %Union County: 29.3 %Van Buren County: 100 %Washington County: 64.7 %White County: 32.8 %Alameda County: 39.7 %Alpine County: 28.6 %Amador County: 78.2 %Butte County: 23.6 %Calaveras County: 45.1 %Colusa County: 54.5 %Contra Costa County: 72.3 %Del Norte County: 97.5 %El Dorado County: 65.9 %Fresno County: 7.1 %Glenn County: 54.2 %Humboldt County: 75.9 %Imperial County: 48.2 %Inyo County: 43.6 %Kern County: 10.7 %Kings County: 21.4 %Lake County: 98.4 %Los Angeles County: 0.5 %Madera County: 5.5 %Marin County: 50.1 %Mariposa County: 47.4 %Mendocino County: 43.5 %Merced County: 19.3 %Mono County: 85.8 %Monterey County: 80.3 %Napa County: 52.6 %Nevada County: 63.8 %Orange County: 11.8 %Placer County: 37 %Plumas County: 50 %Riverside County: 4.1 %Sacramento County: 31.2 %San Benito County: 75.9 %San Bernardino County: 5.8 %San Diego County: 5.8 %San Francisco County: 52.1 %San Joaquin County: 35.1 %San Luis Obispo County: 21.4 %San Mateo County: 64.7 %Santa Barbara County: 24.7 %Santa Clara County: 25.5 %Santa Cruz County: 80.3 %Shasta County: 72.1 %Siskiyou County: 93.8 %Solano County: 54.5 %Sonoma County: 61.6 %Stanislaus County: 22.5 %Sutter County: 25.2 %Tehama County: 36.4 %Trinity County: 55.2 %Tulare County: 13.4 %Tuolumne County: 73 %Ventura County: 57 %Yolo County: 37 %Adams County: 52.9 %Alamosa County: 86.4 %Arapahoe County: 55.5 %Archuleta County: 98.2 %Boulder County: 58.1 %Chaffee County: 54.2 %Clear Creek County: 24.6 %Delta County: 100 %Denver County: 46.3 %Douglas County: 61.7 %Elbert County: 100 %El Paso County: 61.6 %Fremont County: 96.5 %Garfield County: 36.7 %Gunnison County: 79.2 %Jackson County: 100 %Jefferson County: 54.2 %La Plata County: 57 %Larimer County: 39.2 %Mesa County: 52.3 %Moffat County: 88.1 %Montezuma County: 62.2 %Park County: 71.3 %Pitkin County: 38.8 %Prowers County: 94.2 %Pueblo County: 90.5 %Rio Blanco County: 39.5 %Routt County: 96.5 %San Juan County: 100 %San Miguel County: 57.7 %Summit County: 98.7 %Weld County: 56.4 %Kent County: 74 %New Castle County: 31.8 %Sussex County: 72.1 %District of Columbia: 19.7 %Alachua County: 51.4 %Baker County: 92.7 %Bay County: 47.8 %Brevard County: 58.9 %Broward County: 64.1 %Citrus County: 78.4 %Collier County: 62.2 %Columbia County: 46.3 %Duval County: 58.9 %Escambia County: 41.1 %Flagler County: 94.5 %Hamilton County: 46.8 %Highlands County: 92.2 %Hillsborough County: 37 %Holmes County: 49 %Indian River County: 91.3 %Lake County: 61.4 %Lee County: 69.9 %Leon County: 38.9 %Liberty County: 91.8 %Manatee County: 88.5 %Marion County: 54 %Martin County: 62.3 %Miami-Dade County: 42.2 %Okaloosa County: 88.7 %Orange County: 47.1 %Osceola County: 87.9 %Palm Beach County: 59.7 %Pasco County: 84.6 %Pinellas County: 48.5 %Polk County: 52.8 %Putnam County: 99.2 %St. Lucie County: 90.6 %Santa Rosa County: 50.7 %Sarasota County: 42.7 %Seminole County: 86.8 %Volusia County: 59.5 %Wakulla County: 83.2 %Bibb County: 29.7 %Charlton County: 67 %Chatham County: 41.2 %Chattooga County: 78.9 %Clarke County: 42.7 %Clayton County: 31.4 %Cobb County: 33.1 %Coffee County: 47.5 %Columbia County: 62.8 %Coweta County: 50.4 %Dawson County: 81.6 %DeKalb County: 23 %Dougherty County: 20.5 %Douglas County: 72.2 %Floyd County: 30.8 %Fulton County: 32.1 %Glynn County: 77.1 %Gwinnett County: 33.2 %Hall County: 26.8 %Henry County: 43.6 %Houston County: 28.7 %Lowndes County: 11.8 %Murray County: 61.4 %Muscogee County: 37.8 %Paulding County: 35.7 %Pike County: 76.5 %Richmond County: 36.5 %Rockdale County: 68.4 %Sumter County: 73.7 %Walker County: 21.1 %Washington County: 45.9 %Wilkinson County: 35.6 %Hawaii County: 22.7 %Honolulu County: 56.4 %Kauai County: 93.1 %Maui County: 88.4 %Ada County: 75.6 %Bannock County: 87.7 %Benewah County: 78.1 %Bonner County: 100 %Butte County: 81.3 %Canyon County: 91.6 %Cassia County: 85.5 %Custer County: 98 %Franklin County: 72.8 %Idaho County: 98.4 %Kootenai County: 93.4 %Latah County: 93.7 %Lemhi County: 53.5 %Nez Perce County: 90.1 %Shoshone County: 57.2 %Twin Falls County: 88.9 %Adams County: 92.3 %Champaign County: 73.6 %Clark County: 85.8 %Cook County: 14.2 %DuPage County: 30.1 %Effingham County: 82.9 %Hamilton County: 67.5 %Jersey County: 73.2 %Jo Daviess County: 91.1 %Kane County: 88.2 %Lake County: 88 %McHenry County: 37.2 %McLean County: 86.6 %Macon County: 32.6 %Macoupin County: 85.1 %Madison County: 38.2 %Peoria County: 28.5 %Randolph County: 89 %Rock Island County: 98.1 %St. Clair County: 38.6 %Sangamon County: 84.4 %Will County: 93 %Winnebago County: 90.1 %Allen County: 36.6 %Boone County: 73 %Carroll County: 86 %Clark County: 32.2 %Delaware County: 63.6 %Dubois County: 34.5 %Elkhart County: 34.6 %Floyd County: 24.1 %Gibson County: 37.9 %Greene County: 62.7 %Hamilton County: 73.4 %Hancock County: 76.4 %Hendricks County: 79.7 %Henry County: 46.7 %Howard County: 42.7 %Huntington County: 82.5 %Jackson County: 84.2 %Johnson County: 72.5 %Knox County: 66.9 %Lake County: 22.2 %LaPorte County: 64.3 %Madison County: 42.1 %Marion County: 5.5 %Monroe County: 47.6 %Morgan County: 65.7 %Perry County: 70.9 %Porter County: 47.5 %Posey County: 72.7 %St. Joseph County: 35.3 %Shelby County: 63.7 %Spencer County: 32.7 %Tippecanoe County: 28.6 %Vanderburgh County: 44.4 %Vigo County: 31.7 %Wabash County: 82.7 %Warrick County: 69.4 %Whitley County: 40.8 %Black Hawk County: 41.6 %Bremer County: 89.7 %Cerro Gordo County: 96.9 %Clinton County: 23.3 %Delaware County: 51.7 %Harrison County: 79.8 %Johnson County: 25.8 %Lee County: 41.9 %Linn County: 46.3 %Montgomery County: 54.7 %Muscatine County: 32.1 %Palo Alto County: 53.4 %Polk County: 49.6 %Pottawattamie County: 47.1 %Scott County: 18.1 %Story County: 92.5 %Tama County: 54.4 %Van Buren County: 53.7 %Warren County: 91.6 %Woodbury County: 64 %Brown County: 61.1 %Chase County: 73.5 %Ford County: 98.3 %Johnson County: 68.4 %Leavenworth County: 81.7 %Linn County: 69.3 %Neosho County: 96.4 %Riley County: 77.2 %Sedgwick County: 51 %Shawnee County: 69.6 %Sherman County: 96 %Sumner County: 65.2 %Trego County: 69 %Wyandotte County: 34 %Bell County: 72.2 %Boone County: 83.7 %Boyd County: 56.1 %Bullitt County: 55.6 %Campbell County: 34.5 %Carter County: 73.6 %Christian County: 53.8 %Daviess County: 44.9 %Edmonson County: 69.4 %Fayette County: 37.5 %Franklin County: 45 %Greenup County: 83.7 %Hancock County: 72.9 %Hardin County: 58.1 %Henderson County: 55.1 %Jefferson County: 35.6 %Jessamine County: 75.5 %Livingston County: 72.3 %McCracken County: 49.6 %Madison County: 57.3 %Marshall County: 100 %Morgan County: 91.7 %Oldham County: 62 %Perry County: 64.8 %Pike County: 49.9 %Pulaski County: 51.6 %Simpson County: 68 %Trigg County: 78.1 %Warren County: 48.2 %Washington County: 80.2 %Ascension Parish: 83.4 %Bossier Parish: 46.6 %Caddo Parish: 57.3 %Calcasieu Parish: 46.3 %East Baton Rouge Parish: 23 %Iberville Parish: 63.8 %Jefferson Parish: 43.6 %Lafayette Parish: 34.5 %Lafourche Parish: 65.2 %Livingston Parish: 56.7 %Orleans Parish: 61.6 %Ouachita Parish: 36.7 %Pointe Coupee Parish: 85.8 %Rapides Parish: 17 %St. Bernard Parish: 26.5 %St. Charles Parish: 87.7 %St. James Parish: 85.4 %St. John the Baptist Parish: 80.2 %St. Tammany Parish: 59.2 %Tangipahoa Parish: 58.7 %Terrebonne Parish: 61.8 %West Baton Rouge Parish: 18.6 %Androscoggin County: 64.1 %Aroostook County: 89 %Cumberland County: 70.4 %Hancock County: 90.1 %Kennebec County: 92.4 %Knox County: 91.7 %Oxford County: 98.5 %Penobscot County: 74.2 %Piscataquis County: 85.7 %Sagadahoc County: 92.2 %Washington County: 97.2 %York County: 87.5 %Anne Arundel County: 57.2 %Baltimore County: 62.5 %Calvert County: 70.8 %Carroll County: 70.1 %Cecil County: 46.8 %Charles County: 68.6 %Dorchester County: 77.4 %Frederick County: 68.2 %Garrett County: 45.2 %Harford County: 41.1 %Kent County: 46.8 %Montgomery County: 41.5 %Prince George's County: 36.1 %Washington County: 38.8 %Baltimore city: 30.4 %Barnstable County: 89.5 %Berkshire County: 45.5 %Bristol County: 45.3 %Dukes County: 82.5 %Essex County: 49 %Hampden County: 48.2 %Hampshire County: 74.2 %Middlesex County: 89.3 %Norfolk County: 70.3 %Plymouth County: 60.3 %Suffolk County: 27.4 %Worcester County: 52.3 %Allegan County: 67.4 %Bay County: 66.9 %Benzie County: 86 %Berrien County: 65 %Cass County: 73.4 %Chippewa County: 89.2 %Clinton County: 83.1 %Genesee County: 68.2 %Huron County: 88 %Ingham County: 79.6 %Kalamazoo County: 65.8 %Kent County: 55.9 %Keweenaw County: 92.6 %Lenawee County: 60.2 %Macomb County: 63.6 %Manistee County: 78.4 %Mason County: 86.9 %Missaukee County: 88.1 %Monroe County: 52.8 %Muskegon County: 71 %Oakland County: 64.3 %Ottawa County: 66.5 %St. Clair County: 69.4 %Schoolcraft County: 87.1 %Tuscola County: 92 %Washtenaw County: 73.1 %Wayne County: 31 %Wexford County: 92.8 %Anoka County: 54.8 %Becker County: 82.4 %Carlton County: 100 %Cass County: 89.2 %Cook County: 76.5 %Crow Wing County: 76 %Dakota County: 56.4 %Goodhue County: 93 %Hennepin County: 53.7 %Lake County: 79.2 %Lyon County: 75 %Mille Lacs County: 96.6 %Olmsted County: 56.4 %Ramsey County: 48.8 %Rock County: 83 %St. Louis County: 73.4 %Scott County: 84.9 %Stearns County: 63.4 %Washington County: 93.8 %Winona County: 73.3 %Wright County: 49 %Adams County: 79.9 %Bolivar County: 42.5 %DeSoto County: 43.5 %Forrest County: 26.5 %Grenada County: 63.2 %Hancock County: 69.6 %Harrison County: 39.3 %Hinds County: 19.2 %Jackson County: 71.2 %Jones County: 28.8 %Lauderdale County: 37.5 %Lee County: 45 %Yalobusha County: 91.5 %Andrew County: 77.8 %Boone County: 81.6 %Buchanan County: 37.9 %Callaway County: 83.7 %Cass County: 47.7 %Cedar County: 34.5 %Clay County: 47.7 %Clinton County: 71 %Greene County: 45.7 %Jackson County: 38.9 %Jasper County: 64.9 %Jefferson County: 43.3 %Lincoln County: 70.1 %Monroe County: 87.1 %Perry County: 68.3 %St. Charles County: 65.7 %Ste. Genevieve County: 61 %St. Louis County: 40.3 %Stoddard County: 56.9 %Taney County: 69.3 %St. Louis city: 20 %Cascade County: 65.4 %Fergus County: 100 %Flathead County: 60.5 %Gallatin County: 55.9 %Lake County: 97.8 %Lewis and Clark County: 67.7 %Lincoln County: 69.9 %Missoula County: 19.5 %Powder River County: 75 %Powell County: 95.4 %Ravalli County: 76.6 %Richland County: 78 %Roosevelt County: 96.1 %Rosebud County: 84.9 %Sanders County: 93.4 %Sheridan County: 96.5 %Silver Bow County: 64 %Yellowstone County: 88.1 %Cass County: 90.2 %Dawson County: 90 %Douglas County: 40.5 %Garden County: 95.7 %Hall County: 77.3 %Knox County: 90.9 %Lancaster County: 87.7 %Sarpy County: 38.6 %Scotts Bluff County: 77.2 %Thomas County: 93 %Washington County: 56.6 %Churchill County: 99 %Clark County: 29 %Douglas County: 98.8 %Elko County: 96 %Lyon County: 80.3 %Mineral County: 97.4 %Nye County: 94.8 %Washoe County: 54 %White Pine County: 58.3 %Carson City: 77.9 %Belknap County: 91.5 %Cheshire County: 57.3 %Coos County: 74.7 %Grafton County: 69.6 %Hillsborough County: 81.1 %Merrimack County: 76 %Rockingham County: 60 %Atlantic County: 65.7 %Bergen County: 73.1 %Camden County: 49.5 %Cumberland County: 64.6 %Essex County: 54 %Gloucester County: 71.5 %Hudson County: 41.9 %Hunterdon County: 55.2 %Mercer County: 49.3 %Middlesex County: 61.6 %Monmouth County: 86.7 %Morris County: 77.5 %Ocean County: 59.5 %Passaic County: 75.4 %Union County: 29.4 %Warren County: 55 %Bernalillo County: 16.7 %Catron County: 96.7 %Chaves County: 77.3 %Doña Ana County: 31.8 %Eddy County: 58.1 %Grant County: 83.6 %Lea County: 62.5 %Lincoln County: 83.8 %Los Alamos County: 93.6 %Luna County: 81.9 %McKinley County: 100 %Rio Arriba County: 92.9 %Sandoval County: 41.6 %San Juan County: 62.2 %Santa Fe County: 79.2 %Socorro County: 94.3 %Taos County: 89.3 %Valencia County: 72.1 %Albany County: 55.6 %Bronx County: 30.7 %Chautauqua County: 80.3 %Chemung County: 89.9 %Dutchess County: 93.1 %Erie County: 41.9 %Essex County: 84.3 %Franklin County: 98.6 %Hamilton County: 95.4 %Herkimer County: 96 %Jefferson County: 95 %Kings County: 45.2 %Madison County: 95.5 %Monroe County: 73.9 %Nassau County: 46.4 %New York County: 27.1 %Niagara County: 48.6 %Oneida County: 66 %Onondaga County: 87.1 %Orange County: 59.7 %Oswego County: 93.2 %Putnam County: 94.2 %Queens County: 42.5 %Rensselaer County: 95.4 %Richmond County: 44.1 %Rockland County: 63.2 %Saratoga County: 93.6 %Schenectady County: 95.6 %Steuben County: 82.5 %Suffolk County: 55.1 %Tompkins County: 93.1 %Ulster County: 91.7 %Wayne County: 97.7 %Westchester County: 57.2 %Alamance County: 40.8 %Alexander County: 73.8 %Avery County: 79 %Buncombe County: 52.7 %Caldwell County: 75.2 %Carteret County: 87.9 %Caswell County: 50.1 %Catawba County: 38.1 %Chatham County: 68.6 %Cumberland County: 40 %Davidson County: 32.5 %Davie County: 65.9 %Duplin County: 54.6 %Durham County: 48.8 %Edgecombe County: 49.7 %Forsyth County: 38.9 %Franklin County: 72.9 %Gaston County: 40.3 %Graham County: 52 %Granville County: 61.3 %Guilford County: 42.7 %Haywood County: 53.9 %Hyde County: 72.7 %Jackson County: 54.7 %Johnston County: 59.5 %Lenoir County: 63.3 %Lincoln County: 59.2 %McDowell County: 45.9 %Macon County: 90.2 %Martin County: 59.4 %Mecklenburg County: 28.5 %Mitchell County: 48.7 %Montgomery County: 67.3 %New Hanover County: 65.7 %Person County: 65.9 %Pitt County: 61.8 %Robeson County: 47.9 %Rockingham County: 56.1 %Rowan County: 36.2 %Swain County: 37.6 %Union County: 63.6 %Wake County: 40 %Watauga County: 65.8 %Wayne County: 47.4 %Yancey County: 37.7 %Billings County: 95 %Burke County: 75.6 %Burleigh County: 83.5 %Cass County: 72.3 %Dunn County: 95.9 %McKenzie County: 55.9 %Mercer County: 71.8 %Oliver County: 94.8 %Adams County: 53.3 %Allen County: 67.6 %Ashtabula County: 72.5 %Athens County: 80.1 %Butler County: 56.2 %Clark County: 38.4 %Clermont County: 33.4 %Clinton County: 61.2 %Columbiana County: 100 %Cuyahoga County: 14.5 %Delaware County: 72.9 %Fayette County: 82.4 %Franklin County: 31.2 %Geauga County: 80.3 %Greene County: 46.9 %Hamilton County: 28.5 %Hancock County: 100 %Jefferson County: 32.6 %Knox County: 77.6 %Lake County: 49.3 %Lawrence County: 27.2 %Licking County: 73.8 %Lorain County: 57.2 %Lucas County: 45.2 %Madison County: 68.5 %Mahoning County: 37.8 %Medina County: 61.8 %Miami County: 67.8 %Montgomery County: 36.2 %Noble County: 79.9 %Portage County: 67.2 %Preble County: 39.5 %Scioto County: 81.1 %Stark County: 29.9 %Summit County: 53.2 %Trumbull County: 40.9 %Warren County: 27.1 %Washington County: 74.9 %Wood County: 77.6 %Adair County: 37 %Caddo County: 67 %Canadian County: 70.6 %Carter County: 34.8 %Cherokee County: 70.5 %Cleveland County: 29.7 %Comanche County: 38.7 %Cotton County: 63.9 %Creek County: 69 %Dewey County: 51.7 %Ellis County: 83.1 %Jefferson County: 57.5 %Kay County: 61.4 %McClain County: 69.6 %McCurtain County: 78 %Mayes County: 57.9 %Muskogee County: 82.5 %Oklahoma County: 30.7 %Osage County: 69.6 %Ottawa County: 41.6 %Pittsburg County: 34.5 %Sequoyah County: 64.3 %Tulsa County: 17.5 %Baker County: 72.2 %Benton County: 80.3 %Clackamas County: 94.1 %Columbia County: 84.2 %Coos County: 91.1 %Crook County: 67.7 %Deschutes County: 80.5 %Douglas County: 79.4 %Grant County: 59.4 %Harney County: 60.1 %Jackson County: 63.6 %Jefferson County: 79.4 %Josephine County: 71.5 %Klamath County: 61.4 %Lake County: 72.5 %Lane County: 57 %Linn County: 62.8 %Marion County: 75.9 %Multnomah County: 71.2 %Umatilla County: 75.7 %Union County: 73.6 %Wallowa County: 84.5 %Wasco County: 85.8 %Washington County: 71.8 %Yamhill County: 90.1 %Adams County: 33.4 %Allegheny County: 17.5 %Armstrong County: 39.6 %Beaver County: 37 %Berks County: 36.7 %Blair County: 40 %Bucks County: 32.9 %Cambria County: 35.5 %Centre County: 50.1 %Chester County: 36.8 %Clearfield County: 85.2 %Cumberland County: 31.5 %Dauphin County: 40.3 %Delaware County: 33.6 %Elk County: 91.3 %Erie County: 42.5 %Franklin County: 83.3 %Greene County: 81.8 %Indiana County: 83.3 %Lackawanna County: 56.7 %Lancaster County: 25.5 %Lawrence County: 84.9 %Lebanon County: 44.8 %Lehigh County: 86 %Luzerne County: 94.8 %Lycoming County: 92.7 %Mercer County: 47.9 %Monroe County: 73.8 %Montgomery County: 40.3 %Northampton County: 29.3 %Perry County: 87.4 %Philadelphia County: 28.2 %Somerset County: 90.6 %Tioga County: 83.8 %Washington County: 29 %Westmoreland County: 34.5 %York County: 26.6 %Kent County: 71.6 %Providence County: 52.1 %Washington County: 83.9 %Abbeville County: 91.8 %Aiken County: 75.3 %Anderson County: 66.5 %Berkeley County: 89 %Charleston County: 40 %Cherokee County: 70.3 %Chesterfield County: 65.9 %Colleton County: 50.1 %Darlington County: 66.4 %Edgefield County: 52.4 %Florence County: 43.1 %Georgetown County: 95.3 %Greenville County: 34.5 %Horry County: 86.9 %Lexington County: 32.6 %Oconee County: 66.9 %Pickens County: 60.7 %Richland County: 34.8 %Spartanburg County: 33.4 %York County: 90.3 %Brookings County: 87.1 %Brown County: 77 %Codington County: 87.4 %Custer County: 91.5 %Jackson County: 96.4 %Meade County: 97.1 %Minnehaha County: 59.5 %Pennington County: 79.1 %Union County: 51.5 %Anderson County: 73.9 %Blount County: 56.4 %Bradley County: 100 %Claiborne County: 91.8 %Davidson County: 35.1 %DeKalb County: 89.7 %Hamilton County: 48.3 %Jefferson County: 66.1 %Knox County: 74.3 %Lawrence County: 66.1 %Loudon County: 66.9 %McMinn County: 99.7 %Madison County: 100 %Meigs County: 64.4 %Montgomery County: 41.9 %Roane County: 12.6 %Rutherford County: 75.7 %Sevier County: 52.9 %Shelby County: 32.9 %Sullivan County: 80 %Sumner County: 59.2 %Union County: 94.2 %Williamson County: 63.4 %Wilson County: 63.4 %Bell County: 77.1 %Bexar County: 38.6 %Bowie County: 36.1 %Brazoria County: 79.2 %Brewster County: 59.1 %Cameron County: 46 %Collin County: 71.4 %Culberson County: 82.9 %Dallas County: 31.2 %Denton County: 48.2 %Ector County: 49.6 %Ellis County: 47.1 %El Paso County: 12.6 %Fayette County: 66.2 %Galveston County: 51.2 %Gillespie County: 73.2 %Gregg County: 73.4 %Harris County: 11.5 %Harrison County: 38.1 %Hays County: 64 %Hidalgo County: 47.4 %Hood County: 81.1 %Hunt County: 76.7 %Jefferson County: 41.1 %Johnson County: 79.1 %Kaufman County: 46.3 %Kleberg County: 45.6 %Lubbock County: 63.4 %McLennan County: 53.4 %Maverick County: 56 %Montgomery County: 49.7 %Navarro County: 44.4 %Nueces County: 58.6 %Orange County: 57 %Parker County: 70.5 %Polk County: 80.5 %Potter County: 77.5 %Randall County: 65.6 %Rockwall County: 75.3 %Smith County: 73.8 %Tarrant County: 31 %Travis County: 45.8 %Victoria County: 87.5 %Webb County: 46.9 %Wichita County: 68.4 %Box Elder County: 60 %Cache County: 43 %Carbon County: 58.1 %Daggett County: 83.1 %Davis County: 81 %Duchesne County: 56.7 %Garfield County: 98.5 %Salt Lake County: 46.8 %San Juan County: 66.7 %Tooele County: 63.5 %Uintah County: 49 %Utah County: 43 %Washington County: 64.7 %Wayne County: 98.3 %Weber County: 47.1 %Bennington County: 66.2 %Chittenden County: 68.5 %Rutland County: 43.6 %Windham County: 100 %Albemarle County: 58.5 %Arlington County: 72.6 %Caroline County: 84.2 %Carroll County: 100 %Charles City County: 76.8 %Chesterfield County: 65.7 %Culpeper County: 100 %Fairfax County: 49.7 %Fauquier County: 88.3 %Frederick County: 50.1 %Giles County: 81.2 %Hanover County: 72.3 %Henrico County: 49.7 %King William County: 98.2 %Loudoun County: 72.6 %Madison County: 59.2 %Page County: 68.4 %Prince Edward County: 91.5 %Prince William County: 86.4 %Roanoke County: 80 %Rockbridge County: 75.7 %Rockingham County: 74.5 %Stafford County: 78 %Warren County: 100 %Wythe County: 78 %Alexandria city: 73.2 %Bristol city: 51.2 %Fredericksburg city: 100 %Hampton city: 65.2 %Hopewell city: 100 %Lynchburg city: 63.4 %Norfolk city: 83.9 %Richmond city: 100 %Roanoke city: 44.4 %Salem city: 45.5 %Suffolk city: 70.8 %Virginia Beach city: 55.9 %Winchester city: 100 %Adams County: 91.5 %Asotin County: 84.2 %Benton County: 84.3 %Chelan County: 64.2 %Clallam County: 77.3 %Clark County: 70.1 %Columbia County: 88.2 %Cowlitz County: 85.7 %Franklin County: 88.4 %Grant County: 87.2 %Grays Harbor County: 91.2 %Jefferson County: 91.2 %King County: 56.2 %Kitsap County: 79.8 %Kittitas County: 78.8 %Klickitat County: 80.6 %Lewis County: 83.8 %Mason County: 75.6 %Okanogan County: 60.2 %Pend Oreille County: 96.2 %Pierce County: 64.7 %Skagit County: 94.5 %Snohomish County: 65.5 %Spokane County: 62.2 %Stevens County: 62.3 %Thurston County: 83.7 %Walla Walla County: 83.2 %Whatcom County: 92.1 %Whitman County: 86.8 %Yakima County: 64.8 %Berkeley County: 65 %Brooke County: 70.7 %Cabell County: 57.9 %Gilmer County: 95.3 %Greenbrier County: 72.6 %Hancock County: 71 %Harrison County: 49.4 %Kanawha County: 64 %Marion County: 42.1 %Marshall County: 34.8 %Monongalia County: 66.1 %Ohio County: 56.1 %Raleigh County: 58.6 %Tucker County: 85.3 %Wood County: 61.9 %Ashland County: 95.5 %Barron County: 100 %Brown County: 37.1 %Chippewa County: 100 %Columbia County: 83.8 %Dane County: 50.7 %Dodge County: 53.7 %Door County: 89.8 %Eau Claire County: 84.4 %Fond du Lac County: 88.9 %Forest County: 83.3 %Grant County: 55 %Jefferson County: 81.3 %Kenosha County: 62.1 %Kewaunee County: 87.4 %La Crosse County: 65.5 %Manitowoc County: 86.6 %Marathon County: 87.9 %Milwaukee County: 45.8 %Oneida County: 90.4 %Outagamie County: 65.3 %Ozaukee County: 74 %Racine County: 78.1 %Rock County: 79.2 %Sauk County: 81 %Sheboygan County: 79.4 %Taylor County: 89.4 %Vilas County: 89.2 %Walworth County: 81.6 %Waukesha County: 59.4 %Albany County: 63 %Big Horn County: 98.3 %Campbell County: 54 %Carbon County: 77.9 %Converse County: 93.1 %Crook County: 94.1 %Fremont County: 55.1 %Johnson County: 98.1 %Laramie County: 70.1 %Lincoln County: 93.4 %Natrona County: 83 %Park County: 92.6 %Platte County: 95.1 %Sheridan County: 90.3 %Sublette County: 53.2 %Sweetwater County: 62.7 %Teton County: 73.7 %Uinta County: 88.2 %

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