US counties by share of days unhealthy for sensitive groups or worse (US EPA AQI), 2017

Riverside County 41.4%, the highest of 1006 counties, 2017

Baldwin County: 0.4 %Clay County: 0 %Colbert County: 0 %DeKalb County: 0 %Elmore County: 0 %Etowah County: 0.6 %Houston County: 0.4 %Jefferson County: 0.8 %Lawrence County: 0 %Madison County: 0 %Mobile County: 1.4 %Montgomery County: 0.9 %Morgan County: 0 %Russell County: 0 %Shelby County: 0 %Sumter County: 0 %Talladega County: 0 %Tuscaloosa County: 0.3 %Aleutians East Borough: 0 %Anchorage Municipality: 0.3 %Denali Borough: 0 %Fairbanks North Star Borough: 12.3 %Juneau City and Borough: 0.3 %Kenai Peninsula Borough: 0 %Matanuska-Susitna Borough: 1.4 %Apache County: 0 %Cochise County: 0.5 %Coconino County: 0.3 %Gila County: 2.5 %La Paz County: 0.6 %Maricopa County: 15.1 %Mohave County: 0 %Navajo County: 0.3 %Pima County: 1.9 %Pinal County: 18.6 %Santa Cruz County: 1.1 %Yavapai County: 1.5 %Yuma County: 3.8 %Arkansas County: 0 %Ashley County: 0 %Clark County: 0 %Crittenden County: 0.3 %Garland County: 0 %Jackson County: 0 %Newton County: 0 %Polk County: 0 %Pulaski County: 0.3 %Union County: 0 %Washington County: 0 %Alameda County: 3.8 %Amador County: 1.1 %Butte County: 6.6 %Calaveras County: 4 %Colusa County: 2.2 %Contra Costa County: 3.3 %Del Norte County: 0.7 %El Dorado County: 8.6 %Fresno County: 32.9 %Glenn County: 1.9 %Humboldt County: 2.2 %Imperial County: 11.5 %Inyo County: 6.8 %Kern County: 38.1 %Kings County: 19.5 %Lake County: 0.6 %Los Angeles County: 32.6 %Madera County: 13.2 %Marin County: 2.2 %Mariposa County: 11 %Mendocino County: 2.2 %Merced County: 9.3 %Mono County: 6.8 %Monterey County: 0.3 %Napa County: 3.8 %Nevada County: 22.2 %Orange County: 8.8 %Placer County: 2.5 %Plumas County: 7.1 %Riverside County: 41.4 %Sacramento County: 9.6 %San Benito County: 0.5 %San Bernardino County: 40.3 %San Diego County: 17 %San Francisco County: 1.9 %San Joaquin County: 9 %San Luis Obispo County: 2.2 %San Mateo County: 1.9 %Santa Barbara County: 4.7 %Santa Clara County: 3.3 %Santa Cruz County: 1.1 %Shasta County: 3.8 %Siskiyou County: 1.8 %Solano County: 2.7 %Sonoma County: 1.4 %Stanislaus County: 17.3 %Sutter County: 2.5 %Tehama County: 2.5 %Trinity County: 5.4 %Tulare County: 34.8 %Tuolumne County: 6.9 %Ventura County: 9 %Yolo County: 1.9 %Adams County: 0.5 %Alamosa County: 0 %Arapahoe County: 1.9 %Archuleta County: 0 %Boulder County: 3.1 %Chaffee County: 0 %Clear Creek County: 1.3 %Delta County: 0 %Denver County: 0.5 %Douglas County: 4.7 %El Paso County: 0.8 %Fremont County: 0 %Garfield County: 0.3 %Grand County: 0 %Gunnison County: 0.3 %Jackson County: 0.9 %Jefferson County: 7.7 %La Plata County: 1.1 %Larimer County: 3.6 %Mesa County: 0.3 %Moffat County: 0 %Montezuma County: 0.3 %Montrose County: 0 %Park County: 1.1 %Pitkin County: 0 %Prowers County: 0 %Pueblo County: 1.6 %Rio Blanco County: 0 %Routt County: 0 %San Juan County: 0 %San Miguel County: 0 %Weld County: 2.2 %Kent County: 0.3 %New Castle County: 2.7 %Sussex County: 0.3 %District of Columbia: 1.1 %Alachua County: 0 %Baker County: 0 %Bay County: 0 %Brevard County: 0 %Broward County: 1.4 %Citrus County: 0 %Collier County: 0 %Columbia County: 0 %Duval County: 0.3 %Escambia County: 0.8 %Flagler County: 0 %Hamilton County: 0 %Highlands County: 0 %Hillsborough County: 0.8 %Holmes County: 0 %Indian River County: 0.3 %Lake County: 0.5 %Lee County: 0 %Leon County: 0 %Liberty County: 0 %Manatee County: 0.5 %Marion County: 0.3 %Martin County: 0.3 %Miami-Dade County: 1.1 %Nassau County: 0 %Okaloosa County: 0 %Orange County: 0.5 %Osceola County: 0.6 %Palm Beach County: 0.6 %Pasco County: 0.6 %Pinellas County: 0.3 %Polk County: 1.1 %Putnam County: 0 %St. Lucie County: 0.3 %Santa Rosa County: 0 %Sarasota County: 0.6 %Seminole County: 0.6 %Volusia County: 0 %Wakulla County: 0 %Bibb County: 0 %Charlton County: 0 %Chatham County: 0 %Chattooga County: 0 %Clarke County: 0 %Clayton County: 0 %Cobb County: 0 %Coffee County: 0 %Columbia County: 0.4 %Coweta County: 0 %Dawson County: 0.8 %DeKalb County: 0.3 %Dougherty County: 0.3 %Douglas County: 0.4 %Floyd County: 0 %Fulton County: 1.6 %Glynn County: 0 %Gwinnett County: 0 %Hall County: 0 %Henry County: 0.9 %Houston County: 0 %Lowndes County: 0.3 %Murray County: 0 %Muscogee County: 0 %Paulding County: 0 %Pike County: 0.3 %Richmond County: 0.3 %Rockdale County: 0.4 %Sumter County: 0 %Walker County: 0 %Washington County: 0 %Hawaii County: 0 %Honolulu County: 0 %Kauai County: 0 %Maui County: 0 %Ada County: 6 %Bannock County: 1.6 %Benewah County: 8.2 %Blaine County: 2.3 %Boise County: 2.7 %Bonner County: 3.3 %Bonneville County: 1.1 %Butte County: 0.9 %Canyon County: 4.7 %Custer County: 2.7 %Franklin County: 3.8 %Idaho County: 4.7 %Jerome County: 2.1 %Kootenai County: 3.1 %Latah County: 3.1 %Lemhi County: 8.7 %Nez Perce County: 4.1 %Shoshone County: 6.8 %Twin Falls County: 2.1 %Valley County: 3.3 %Adams County: 0.4 %Champaign County: 0.3 %Clark County: 0.4 %Cook County: 5.2 %DuPage County: 0.6 %Effingham County: 1.2 %Hamilton County: 0 %Jersey County: 1 %Jo Daviess County: 0 %Kane County: 0.3 %Lake County: 2 %McHenry County: 0.8 %McLean County: 0 %Macon County: 0.8 %Macoupin County: 0 %Madison County: 2.5 %Peoria County: 0.8 %Randolph County: 0.3 %Rock Island County: 0 %St. Clair County: 0.3 %Sangamon County: 0.5 %Will County: 0 %Winnebago County: 0 %Allen County: 0.3 %Bartholomew County: 0 %Boone County: 0.4 %Brown County: 0 %Carroll County: 0 %Clark County: 0.3 %Delaware County: 0.4 %Dubois County: 0 %Elkhart County: 0.3 %Floyd County: 1.4 %Greene County: 0.4 %Hamilton County: 0.5 %Hendricks County: 0 %Henry County: 0 %Howard County: 0 %Huntington County: 0 %Jackson County: 0 %Johnson County: 0 %Knox County: 0 %Lake County: 1.4 %LaPorte County: 2.8 %Madison County: 0.3 %Marion County: 1.1 %Monroe County: 0 %Morgan County: 0 %Perry County: 0.4 %Porter County: 2.5 %Posey County: 0.9 %St. Joseph County: 1.1 %Shelby County: 0.4 %Spencer County: 0 %Sullivan County: 0 %Tippecanoe County: 0 %Vanderburgh County: 0.5 %Vigo County: 0.5 %Wabash County: 0.3 %Warrick County: 1.2 %Whitley County: 0 %Black Hawk County: 0 %Bremer County: 0 %Cerro Gordo County: 0 %Clinton County: 0 %Delaware County: 0 %Harrison County: 0 %Johnson County: 0 %Lee County: 0 %Linn County: 0 %Montgomery County: 0 %Muscatine County: 0 %Palo Alto County: 0.3 %Polk County: 0.3 %Pottawattamie County: 0 %Scott County: 0.3 %Van Buren County: 0 %Warren County: 0 %Woodbury County: 0 %Chase County: 0 %Ford County: 0.5 %Johnson County: 0 %Leavenworth County: 0 %Neosho County: 0 %Sedgwick County: 0 %Shawnee County: 0 %Sherman County: 0 %Sumner County: 0 %Trego County: 0 %Wyandotte County: 0.3 %Bell County: 0 %Boone County: 0 %Boyd County: 0 %Bullitt County: 0 %Campbell County: 0.6 %Carter County: 0 %Christian County: 0 %Daviess County: 0 %Edmonson County: 0 %Fayette County: 0 %Greenup County: 0 %Hancock County: 0 %Hardin County: 0 %Henderson County: 0.3 %Jefferson County: 1.1 %Jessamine County: 0 %Livingston County: 0 %McCracken County: 0.3 %Madison County: 0 %Morgan County: 0 %Oldham County: 0.4 %Perry County: 0 %Pike County: 0 %Pulaski County: 0 %Simpson County: 0 %Trigg County: 0 %Warren County: 0 %Washington County: 0.3 %Ascension Parish: 0.6 %Bossier Parish: 0 %Caddo Parish: 0 %Calcasieu Parish: 0.8 %East Baton Rouge Parish: 1.6 %Iberville Parish: 0.3 %Jefferson Parish: 0.5 %Lafayette Parish: 0.3 %Lafourche Parish: 0 %Livingston Parish: 0.8 %Orleans Parish: 0 %Ouachita Parish: 0 %Pointe Coupee Parish: 0.6 %Rapides Parish: 0 %St. Bernard Parish: 0 %St. James Parish: 0 %St. John the Baptist Parish: 0 %St. Martin Parish: 0.3 %St. Tammany Parish: 0.3 %Tangipahoa Parish: 0 %Terrebonne Parish: 0 %West Baton Rouge Parish: 0.8 %Androscoggin County: 0 %Aroostook County: 0.3 %Cumberland County: 0.5 %Franklin County: 0 %Hancock County: 1.6 %Kennebec County: 0 %Knox County: 1.4 %Oxford County: 0 %Penobscot County: 0 %Washington County: 0.6 %York County: 0.4 %Anne Arundel County: 2.3 %Baltimore County: 3.3 %Calvert County: 0.4 %Carroll County: 0.4 %Cecil County: 2.2 %Charles County: 0 %Dorchester County: 0 %Frederick County: 0.8 %Garrett County: 0 %Harford County: 2.5 %Howard County: 0 %Kent County: 0.8 %Montgomery County: 0.6 %Prince George's County: 1.6 %Washington County: 0.3 %Baltimore city: 0.8 %Barnstable County: 1.4 %Berkshire County: 0 %Bristol County: 1.6 %Dukes County: 1.1 %Essex County: 0.8 %Franklin County: 0 %Hampden County: 1.1 %Hampshire County: 0.8 %Middlesex County: 0.3 %Norfolk County: 1.1 %Plymouth County: 1.1 %Suffolk County: 0.8 %Worcester County: 0.8 %Allegan County: 1.4 %Bay County: 0 %Benzie County: 0.8 %Berrien County: 1.1 %Cass County: 2.4 %Chippewa County: 0 %Clinton County: 0 %Genesee County: 0 %Huron County: 0 %Ingham County: 0 %Kalamazoo County: 0.3 %Kent County: 0 %Keweenaw County: 0 %Lenawee County: 0.3 %Macomb County: 1.1 %Manistee County: 0.4 %Mason County: 0.4 %Missaukee County: 0.3 %Monroe County: 0 %Muskegon County: 2 %Oakland County: 0.7 %Ottawa County: 0 %St. Clair County: 0.6 %Schoolcraft County: 0.3 %Tuscola County: 0 %Washtenaw County: 0.8 %Wayne County: 3 %Wexford County: 0 %Anoka County: 0 %Becker County: 0 %Beltrami County: 0 %Carlton County: 0 %Cook County: 0 %Crow Wing County: 0 %Dakota County: 0 %Goodhue County: 0 %Hennepin County: 0.3 %Lake County: 0 %Lyon County: 0 %Mille Lacs County: 0 %Olmsted County: 0 %Ramsey County: 0 %St. Louis County: 0 %Scott County: 0 %Stearns County: 0 %Washington County: 0 %Winona County: 0 %Wright County: 0 %Bolivar County: 0 %DeSoto County: 0 %Forrest County: 0 %Grenada County: 0 %Hancock County: 0 %Harrison County: 0.3 %Hinds County: 0 %Jackson County: 0.3 %Lauderdale County: 0 %Lee County: 0 %Yalobusha County: 0 %Andrew County: 0.4 %Boone County: 0 %Buchanan County: 0.3 %Callaway County: 0 %Cass County: 0.6 %Cedar County: 0 %Clay County: 1.1 %Clinton County: 0 %Greene County: 0 %Jackson County: 0 %Jasper County: 0 %Jefferson County: 0.3 %Lincoln County: 0.4 %Monroe County: 0 %Perry County: 0 %St. Charles County: 1.6 %Ste. Genevieve County: 0.8 %St. Louis County: 0.3 %Stoddard County: 0 %Taney County: 0 %St. Louis city: 0.5 %Cascade County: 0.3 %Fergus County: 1.9 %Flathead County: 3 %Gallatin County: 0.8 %Lake County: 1.8 %Lewis and Clark County: 7.9 %Lincoln County: 3.6 %Missoula County: 20 %Phillips County: 0.8 %Powder River County: 2.5 %Powell County: 1 %Ravalli County: 11.1 %Richland County: 0.6 %Roosevelt County: 0 %Rosebud County: 3 %Sanders County: 3.6 %Sheridan County: 0 %Silver Bow County: 6.8 %Yellowstone County: 1.4 %Cass County: 0 %Douglas County: 0 %Hall County: 0 %Knox County: 0 %Lancaster County: 0 %Sarpy County: 0 %Scotts Bluff County: 0.9 %Thomas County: 0 %Washington County: 0 %Churchill County: 0.9 %Clark County: 7.9 %Douglas County: 1.2 %Elko County: 0.3 %Lyon County: 0.8 %Nye County: 1.1 %Washoe County: 1.1 %White Pine County: 0 %Carson City: 0.5 %Belknap County: 0 %Cheshire County: 0 %Coos County: 0.8 %Grafton County: 0 %Hillsborough County: 0.3 %Merrimack County: 0 %Rockingham County: 0.5 %Atlantic County: 0 %Bergen County: 1.9 %Camden County: 3.8 %Cumberland County: 0 %Essex County: 0.3 %Gloucester County: 2 %Hudson County: 0.8 %Hunterdon County: 1.1 %Mercer County: 1.1 %Middlesex County: 1.6 %Monmouth County: 0.4 %Morris County: 0.8 %Ocean County: 1.1 %Passaic County: 0.3 %Union County: 0.3 %Warren County: 0.3 %Bernalillo County: 1.1 %Catron County: 1.8 %Chaves County: 0.8 %Doña Ana County: 9.3 %Eddy County: 2.7 %Lea County: 1.1 %Lincoln County: 0 %Los Alamos County: 0 %Luna County: 1.4 %Rio Arriba County: 0.8 %Sandoval County: 0.3 %San Juan County: 1.6 %Santa Fe County: 0 %Socorro County: 0 %Taos County: 0 %Valencia County: 0.3 %Albany County: 0 %Bronx County: 0.5 %Chautauqua County: 0.6 %Dutchess County: 0.3 %Erie County: 0.3 %Essex County: 0 %Franklin County: 0 %Hamilton County: 0 %Herkimer County: 0 %Jefferson County: 0.6 %Kings County: 0 %Monroe County: 0.8 %Nassau County: 0 %New York County: 0.5 %Niagara County: 0.4 %Oneida County: 0 %Onondaga County: 0 %Orange County: 0 %Oswego County: 0 %Putnam County: 0.8 %Queens County: 1.6 %Richmond County: 1.9 %Rockland County: 0.3 %Saratoga County: 0 %Steuben County: 0 %Suffolk County: 2.5 %Tompkins County: 0 %Wayne County: 0.3 %Westchester County: 1.4 %Alexander County: 0 %Avery County: 0 %Buncombe County: 0 %Caldwell County: 0 %Carteret County: 0 %Caswell County: 0 %Catawba County: 0 %Cumberland County: 0 %Davidson County: 0 %Durham County: 0 %Edgecombe County: 0 %Forsyth County: 0 %Graham County: 0 %Granville County: 0 %Guilford County: 0.3 %Haywood County: 0 %Hyde County: 0 %Jackson County: 0 %Johnston County: 0 %Lee County: 0 %Lenoir County: 0 %Lincoln County: 0 %Macon County: 0 %Martin County: 0 %Mecklenburg County: 0.8 %Mitchell County: 0 %Montgomery County: 0 %New Hanover County: 0 %Person County: 0 %Pitt County: 0 %Rockingham County: 0 %Rowan County: 0 %Swain County: 0 %Union County: 0.4 %Wake County: 0 %Yancey County: 0 %Billings County: 0.5 %Burke County: 0.3 %Burleigh County: 0.8 %Cass County: 0 %Dunn County: 0.6 %McKenzie County: 0.6 %Mercer County: 0.5 %Oliver County: 0.3 %Stutsman County: 0 %Ward County: 0.6 %Williams County: 0.6 %Adams County: 0 %Allen County: 0.3 %Ashtabula County: 0.8 %Athens County: 0 %Belmont County: 0 %Butler County: 1.6 %Clark County: 0.5 %Clermont County: 0.5 %Clinton County: 1.2 %Columbiana County: 0 %Cuyahoga County: 1.1 %Delaware County: 0 %Fayette County: 0.3 %Franklin County: 0.8 %Geauga County: 1.6 %Greene County: 0.3 %Hamilton County: 1.4 %Jefferson County: 0 %Knox County: 0 %Lake County: 1.6 %Lawrence County: 0.5 %Licking County: 0 %Lorain County: 0.3 %Lucas County: 1.1 %Madison County: 0.4 %Mahoning County: 0 %Medina County: 0 %Miami County: 0.4 %Montgomery County: 0.3 %Noble County: 0 %Portage County: 0 %Preble County: 0.3 %Scioto County: 0 %Stark County: 0.5 %Summit County: 0 %Trumbull County: 0.6 %Warren County: 0.3 %Washington County: 0 %Wood County: 0 %Adair County: 0 %Bryan County: 0 %Caddo County: 0 %Canadian County: 0.3 %Carter County: 0 %Cherokee County: 0 %Choctaw County: 0 %Cleveland County: 0.6 %Comanche County: 0.3 %Creek County: 0 %Custer County: 0 %Dewey County: 0.6 %Grady County: 0 %Jefferson County: 0.4 %Kay County: 0 %Lincoln County: 0 %Love County: 3 %McClain County: 0.6 %Mayes County: 0 %Muskogee County: 0 %Oklahoma County: 1.6 %Osage County: 0.3 %Ottawa County: 0 %Pittsburg County: 0 %Sequoyah County: 0 %Tulsa County: 0.3 %Washington County: 0.5 %Baker County: 1.6 %Benton County: 0.6 %Clackamas County: 5.6 %Columbia County: 1.2 %Crook County: 4.5 %Deschutes County: 7.7 %Douglas County: 1.9 %Grant County: 3.4 %Harney County: 2.2 %Jackson County: 8.5 %Jefferson County: 9.8 %Josephine County: 5.8 %Klamath County: 7.2 %Lake County: 5 %Lane County: 8.2 %Linn County: 2.5 %Marion County: 2.5 %Multnomah County: 1.6 %Umatilla County: 3.3 %Union County: 3 %Wallowa County: 2.5 %Wasco County: 4.4 %Washington County: 3.3 %Adams County: 0.3 %Allegheny County: 5.2 %Armstrong County: 0 %Beaver County: 0.5 %Berks County: 1.4 %Blair County: 0 %Bradford County: 0 %Bucks County: 3.6 %Cambria County: 0 %Centre County: 0 %Chester County: 1.4 %Clearfield County: 0 %Cumberland County: 0.3 %Dauphin County: 0.3 %Delaware County: 0.5 %Elk County: 0 %Erie County: 0.3 %Franklin County: 0 %Greene County: 0 %Indiana County: 0 %Lackawanna County: 0 %Lancaster County: 1.1 %Lawrence County: 0 %Lebanon County: 0.3 %Lehigh County: 0.3 %Luzerne County: 0 %Lycoming County: 0 %Mercer County: 0.5 %Monroe County: 0 %Montgomery County: 1.9 %Northampton County: 0.3 %Philadelphia County: 3.3 %Somerset County: 0 %Tioga County: 0 %Washington County: 0 %Westmoreland County: 0 %York County: 0 %Kent County: 1.4 %Providence County: 1.1 %Washington County: 1.4 %Abbeville County: 0 %Aiken County: 0 %Anderson County: 0 %Berkeley County: 0 %Charleston County: 0.3 %Chesterfield County: 0.3 %Colleton County: 0 %Darlington County: 0 %Edgefield County: 0 %Florence County: 0 %Georgetown County: 0 %Greenville County: 0 %Horry County: 0 %Lexington County: 0 %Oconee County: 0 %Pickens County: 0 %Richland County: 0.5 %Spartanburg County: 0.3 %York County: 0.3 %Brookings County: 0 %Brown County: 0 %Codington County: 0 %Custer County: 0.8 %Hughes County: 0 %Jackson County: 0.5 %Meade County: 0 %Minnehaha County: 0 %Pennington County: 1.4 %Union County: 0 %Anderson County: 0 %Blount County: 0.3 %Claiborne County: 0 %Davidson County: 0.3 %DeKalb County: 0 %Dyer County: 0 %Hamilton County: 0.6 %Jefferson County: 0.5 %Knox County: 0 %Lawrence County: 0 %Loudon County: 0 %McMinn County: 0 %Madison County: 0 %Maury County: 0 %Montgomery County: 0 %Putnam County: 0 %Roane County: 0 %Sevier County: 0 %Shelby County: 1.1 %Sullivan County: 0 %Sumner County: 0 %Williamson County: 0 %Wilson County: 0 %Bell County: 1.4 %Bexar County: 1.7 %Bowie County: 0 %Brazoria County: 2 %Brewster County: 0 %Cameron County: 0 %Collin County: 1.9 %Culberson County: 1.7 %Dallas County: 1.9 %Denton County: 2.5 %Ector County: 0 %Ellis County: 0.8 %El Paso County: 6.3 %Fayette County: 0 %Galveston County: 1.7 %Gregg County: 0 %Harris County: 5.5 %Harrison County: 0 %Hidalgo County: 0 %Hood County: 0.9 %Hunt County: 0 %Jefferson County: 0.8 %Johnson County: 2.2 %Kaufman County: 0.3 %Kleberg County: 0 %Lubbock County: 0 %McLennan County: 0.5 %Maverick County: 0 %Montgomery County: 1.9 %Navarro County: 0.3 %Nueces County: 0 %Orange County: 0.3 %Parker County: 0.3 %Polk County: 0 %Potter County: 0 %Randall County: 0.3 %Rockwall County: 0.3 %Smith County: 0 %Tarrant County: 3.6 %Travis County: 1.1 %Victoria County: 0 %Webb County: 0 %Box Elder County: 3 %Cache County: 4.7 %Carbon County: 0 %Davis County: 7.7 %Duchesne County: 2.5 %Garfield County: 0.8 %Salt Lake County: 12.1 %San Juan County: 0 %Tooele County: 4.7 %Uintah County: 3 %Utah County: 3.8 %Washington County: 0.3 %Wayne County: 0 %Weber County: 6.3 %Bennington County: 0.3 %Chittenden County: 0 %Rutland County: 0 %Windham County: 0 %Albemarle County: 0 %Arlington County: 0.8 %Caroline County: 0 %Carroll County: 0 %Charles City County: 0 %Chesterfield County: 0 %Fairfax County: 0.3 %Fauquier County: 0 %Frederick County: 0 %Giles County: 0.3 %Hanover County: 0 %Henrico County: 0.3 %Loudoun County: 0 %Madison County: 0 %Prince Edward County: 0 %Prince William County: 0 %Roanoke County: 0 %Rockbridge County: 0 %Rockingham County: 0 %Stafford County: 0 %Wythe County: 0 %Alexandria city: 0 %Bristol city: 0 %Fredericksburg city: 0 %Hampton city: 0 %Hopewell city: 0 %Lynchburg city: 0 %Norfolk city: 0 %Richmond city: 0 %Salem city: 0 %Suffolk city: 0 %Virginia Beach city: 0 %Winchester city: 0 %Adams County: 3.1 %Asotin County: 5.5 %Benton County: 3.8 %Chelan County: 5.8 %Clallam County: 2.2 %Clark County: 2.2 %Columbia County: 2.7 %Cowlitz County: 0.5 %Franklin County: 2.4 %Garfield County: 3.3 %Grant County: 2.7 %Grays Harbor County: 0.8 %Jefferson County: 0.3 %King County: 4.9 %Kitsap County: 1.4 %Kittitas County: 4.5 %Klickitat County: 2.5 %Lewis County: 0.8 %Mason County: 0.6 %Okanogan County: 4.7 %Pierce County: 3.6 %Skagit County: 0 %Snohomish County: 4.4 %Spokane County: 4.4 %Stevens County: 4.7 %Thurston County: 1.1 %Walla Walla County: 3.1 %Whatcom County: 2 %Whitman County: 2.7 %Yakima County: 7.9 %Berkeley County: 0 %Brooke County: 0 %Cabell County: 0.7 %Gilmer County: 0 %Greenbrier County: 0 %Hancock County: 0 %Harrison County: 0 %Kanawha County: 0.3 %Marion County: 0 %Marshall County: 0 %Monongalia County: 0 %Ohio County: 0 %Tucker County: 0 %Wood County: 0 %Ashland County: 0 %Brown County: 0 %Columbia County: 0 %Dane County: 0 %Dodge County: 0.3 %Door County: 1.3 %Eau Claire County: 0 %Fond du Lac County: 0 %Forest County: 0 %Grant County: 0 %Jefferson County: 0 %Kenosha County: 2.8 %Kewaunee County: 0.9 %La Crosse County: 0 %Manitowoc County: 1.7 %Marathon County: 0 %Milwaukee County: 1.1 %Outagamie County: 0 %Ozaukee County: 2.3 %Racine County: 4.8 %Rock County: 0 %Sauk County: 0 %Sheboygan County: 5.3 %Taylor County: 0 %Vilas County: 0 %Walworth County: 0 %Waukesha County: 0 %Albany County: 0.8 %Big Horn County: 0 %Campbell County: 1.9 %Carbon County: 0 %Converse County: 0.8 %Fremont County: 0.5 %Laramie County: 0.8 %Lincoln County: 0.3 %Natrona County: 0.5 %Park County: 0 %Platte County: 0 %Sheridan County: 1.1 %Sublette County: 2.2 %Sweetwater County: 1.4 %Teton County: 0.3 %Uinta County: 0.5 %Weston County: 0 %

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