US counties by share of days unhealthy for sensitive groups or worse (US EPA AQI), 2010

Riverside County 40%, the highest of 1055 counties, 2010

Baldwin County: 2.2 %Clay County: 0 %Colbert County: 0.3 %DeKalb County: 1.1 %Elmore County: 2.1 %Etowah County: 0.3 %Houston County: 1.1 %Jefferson County: 8.2 %Lawrence County: 0 %Madison County: 1.2 %Mobile County: 2.2 %Montgomery County: 1.6 %Morgan County: 0.8 %Russell County: 0.7 %Shelby County: 2.5 %Sumter County: 0.4 %Talladega County: 0 %Tuscaloosa County: 0 %Walker County: 0 %Aleutians East Borough: 0 %Anchorage Municipality: 0.5 %Denali Borough: 0 %Fairbanks North Star Borough: 9.9 %Juneau City and Borough: 0.3 %Kenai Peninsula Borough: 0 %Matanuska-Susitna Borough: 0.9 %Yukon-Koyukuk Census Area: 0 %Apache County: 0 %Cochise County: 1.1 %Coconino County: 1.1 %Gila County: 0.8 %La Paz County: 1.9 %Maricopa County: 7.9 %Mohave County: 0 %Navajo County: 0.5 %Pima County: 1.4 %Pinal County: 11.2 %Santa Cruz County: 3.6 %Yavapai County: 0.4 %Yuma County: 2.2 %Arkansas County: 0 %Ashley County: 0 %Clark County: 1.1 %Crittenden County: 4.4 %Faulkner County: 0 %Garland County: 0 %Jackson County: 0 %Newton County: 0.5 %Phillips County: 0 %Polk County: 2.5 %Pope County: 0 %Pulaski County: 2.2 %Sebastian County: 0 %Union County: 0 %Van Buren County: 0 %Washington County: 0.3 %White County: 0 %Alameda County: 1.4 %Amador County: 3 %Butte County: 3.6 %Calaveras County: 3.6 %Colusa County: 0.3 %Contra Costa County: 2.5 %Del Norte County: 0 %El Dorado County: 6.8 %Fresno County: 23.8 %Glenn County: 0 %Humboldt County: 0 %Imperial County: 14 %Inyo County: 8.5 %Kern County: 34.2 %Kings County: 22.7 %Lake County: 0 %Los Angeles County: 31.2 %Madera County: 7.7 %Marin County: 1.1 %Mariposa County: 7.1 %Mendocino County: 0 %Merced County: 10.7 %Mono County: 6 %Monterey County: 0 %Napa County: 0.5 %Nevada County: 6 %Orange County: 2.2 %Placer County: 8.2 %Plumas County: 2.4 %Riverside County: 40 %Sacramento County: 7.7 %San Benito County: 1.9 %San Bernardino County: 37 %San Diego County: 6.8 %San Francisco County: 0.8 %San Joaquin County: 3.6 %San Luis Obispo County: 9.3 %San Mateo County: 0.6 %Santa Barbara County: 1.9 %Santa Clara County: 3.3 %Santa Cruz County: 0 %Shasta County: 4.1 %Siskiyou County: 0 %Solano County: 1.1 %Sonoma County: 0 %Stanislaus County: 10.4 %Sutter County: 1.1 %Tehama County: 4.9 %Trinity County: 0 %Tulare County: 30.7 %Tuolumne County: 2.2 %Ventura County: 4.9 %Yolo County: 0.8 %Adams County: 0 %Alamosa County: 1.1 %Arapahoe County: 1.9 %Archuleta County: 1.6 %Boulder County: 3.3 %Chaffee County: 2.3 %Clear Creek County: 21.9 %Delta County: 0 %Denver County: 0.8 %Douglas County: 3.7 %Elbert County: 0 %El Paso County: 1.1 %Fremont County: 0 %Garfield County: 2.7 %Gunnison County: 0.5 %Jackson County: 0 %Jefferson County: 7.1 %La Plata County: 2.7 %Larimer County: 5.8 %Mesa County: 1.6 %Montezuma County: 0.3 %Park County: 2.6 %Pitkin County: 1.7 %Prowers County: 0 %Pueblo County: 0 %Rio Blanco County: 0.6 %Routt County: 0 %San Juan County: 0 %San Miguel County: 0.7 %Summit County: 0 %Teller County: 1.5 %Weld County: 1.9 %Kent County: 3.9 %New Castle County: 9 %Sussex County: 6.9 %District of Columbia: 9.6 %Alachua County: 0.3 %Baker County: 0 %Bay County: 1.6 %Brevard County: 0 %Broward County: 0.3 %Citrus County: 0 %Collier County: 0 %Columbia County: 0.3 %Duval County: 1.4 %Escambia County: 2.2 %Hamilton County: 0 %Highlands County: 0 %Hillsborough County: 2.7 %Holmes County: 0 %Indian River County: 0 %Lake County: 0.3 %Lee County: 0.3 %Leon County: 0.3 %Liberty County: 0 %Manatee County: 0.8 %Marion County: 0.5 %Martin County: 0 %Miami-Dade County: 1.1 %Okaloosa County: 0.8 %Orange County: 1.4 %Osceola County: 0.5 %Palm Beach County: 0.5 %Pasco County: 0 %Pinellas County: 0 %Polk County: 0.5 %Putnam County: 0 %St. Lucie County: 0 %Santa Rosa County: 1.6 %Sarasota County: 1.4 %Seminole County: 0.8 %Volusia County: 0.3 %Wakulla County: 0.6 %Bibb County: 1.1 %Charlton County: 0 %Chatham County: 0 %Chattooga County: 0 %Clarke County: 1.4 %Clayton County: 0 %Cobb County: 4.9 %Coffee County: 0 %Columbia County: 0.4 %Coweta County: 0 %Dawson County: 3.3 %DeKalb County: 3 %Dougherty County: 0.8 %Douglas County: 3.7 %Floyd County: 0.6 %Fulton County: 4.7 %Glynn County: 0 %Gwinnett County: 1.4 %Hall County: 0 %Henry County: 1.4 %Houston County: 0 %Lowndes County: 1.8 %Murray County: 3.2 %Muscogee County: 0.8 %Paulding County: 1.9 %Pike County: 1.5 %Richmond County: 1.4 %Rockdale County: 2.8 %Sumter County: 0.9 %Walker County: 0 %Washington County: 0 %Wilkinson County: 0.9 %Hawaii County: 4.1 %Honolulu County: 0.3 %Maui County: 0 %Ada County: 1.1 %Bannock County: 0 %Benewah County: 0.6 %Bonner County: 0.3 %Butte County: 0 %Canyon County: 0.3 %Cassia County: 0 %Custer County: 0 %Franklin County: 9.1 %Idaho County: 0 %Kootenai County: 0 %Latah County: 0 %Lemhi County: 4.1 %Nez Perce County: 0 %Power County: 0 %Shoshone County: 6.3 %Twin Falls County: 0.3 %Adams County: 0.3 %Champaign County: 0 %Clark County: 0 %Cook County: 6.6 %DuPage County: 0.8 %Effingham County: 3.1 %Hamilton County: 4.4 %Jackson County: 0 %Jersey County: 1.5 %Jo Daviess County: 0.6 %Kane County: 0.8 %Lake County: 3 %LaSalle County: 0 %McHenry County: 0.3 %McLean County: 0.5 %Macon County: 0 %Macoupin County: 1.1 %Madison County: 7.1 %Peoria County: 0.8 %Randolph County: 0 %Rock Island County: 0 %St. Clair County: 1.9 %Sangamon County: 0.3 %Will County: 0.6 %Winnebago County: 0.5 %Allen County: 2.2 %Boone County: 3.8 %Carroll County: 2.2 %Clark County: 4.5 %Delaware County: 0.9 %Dubois County: 0 %Elkhart County: 0.7 %Floyd County: 3 %Gibson County: 0 %Greene County: 3.6 %Hamilton County: 4.4 %Hancock County: 2.2 %Hendricks County: 0 %Henry County: 0.9 %Howard County: 0.9 %Huntington County: 0 %Jackson County: 1.2 %Johnson County: 1.1 %Knox County: 1.1 %Lake County: 4.7 %LaPorte County: 1.2 %Madison County: 0 %Marion County: 3.6 %Monroe County: 0 %Morgan County: 0 %Perry County: 3.3 %Porter County: 1.4 %Posey County: 1.7 %St. Joseph County: 2.8 %Shelby County: 0 %Spencer County: 0 %Tippecanoe County: 0.5 %Vanderburgh County: 2.2 %Vigo County: 0.6 %Wabash County: 0.6 %Warrick County: 3.3 %Washington County: 0 %Whitley County: 0.4 %Black Hawk County: 1.9 %Bremer County: 0.5 %Cerro Gordo County: 0 %Clinton County: 2.7 %Delaware County: 0 %Harrison County: 0.9 %Johnson County: 1.1 %Lee County: 1.7 %Linn County: 1.6 %Montgomery County: 0.6 %Muscatine County: 4.4 %Palo Alto County: 0.7 %Polk County: 0.8 %Pottawattamie County: 0.4 %Scott County: 1.6 %Story County: 0 %Tama County: 0 %Van Buren County: 0.7 %Warren County: 0 %Woodbury County: 0.8 %Brown County: 0 %Chase County: 0.8 %Ford County: 0 %Johnson County: 1.1 %Leavenworth County: 0.8 %Linn County: 0 %Neosho County: 0 %Riley County: 0.6 %Sedgwick County: 3.3 %Shawnee County: 0.5 %Sherman County: 0 %Sumner County: 1.9 %Trego County: 1.1 %Wyandotte County: 0 %Bell County: 2.7 %Boone County: 0.8 %Boyd County: 1.1 %Bullitt County: 2.8 %Campbell County: 1.9 %Carter County: 2.1 %Christian County: 2.8 %Daviess County: 1.9 %Edmonson County: 1.6 %Fayette County: 1.6 %Franklin County: 0 %Greenup County: 1.6 %Hancock County: 3.3 %Hardin County: 1.5 %Henderson County: 2.8 %Jefferson County: 7.1 %Jessamine County: 1.2 %Kenton County: 0.7 %Livingston County: 0.4 %McCracken County: 1.9 %Madison County: 0 %Marshall County: 0 %Morgan County: 1.5 %Ohio County: 0 %Oldham County: 6.6 %Perry County: 1.1 %Pike County: 0.6 %Pulaski County: 0 %Simpson County: 2.9 %Trigg County: 1.9 %Warren County: 0.5 %Washington County: 1.4 %Ascension Parish: 3.3 %Bossier Parish: 4.1 %Caddo Parish: 3 %Calcasieu Parish: 2.5 %East Baton Rouge Parish: 4.7 %Iberville Parish: 4.9 %Jefferson Parish: 3 %Lafayette Parish: 2.7 %Lafourche Parish: 2.2 %Livingston Parish: 2.7 %Orleans Parish: 1.1 %Ouachita Parish: 0.8 %Pointe Coupee Parish: 2.8 %Rapides Parish: 0 %St. Bernard Parish: 2.2 %St. Charles Parish: 2.8 %St. James Parish: 0.6 %St. John the Baptist Parish: 1.9 %St. Tammany Parish: 1.4 %Tangipahoa Parish: 0 %Terrebonne Parish: 0 %West Baton Rouge Parish: 1.1 %Winn Parish: 0 %Androscoggin County: 0.5 %Aroostook County: 0.3 %Cumberland County: 1.6 %Hancock County: 1.4 %Kennebec County: 0.4 %Knox County: 1.4 %Oxford County: 0 %Penobscot County: 0 %Piscataquis County: 0 %Sagadahoc County: 0.5 %Washington County: 0.3 %York County: 1.7 %Anne Arundel County: 5.6 %Baltimore County: 9.4 %Calvert County: 5.7 %Carroll County: 9.9 %Cecil County: 6.2 %Charles County: 6.1 %Dorchester County: 2.5 %Frederick County: 8.4 %Garrett County: 3.8 %Harford County: 15.6 %Kent County: 5.2 %Montgomery County: 6.6 %Prince George's County: 9.7 %Washington County: 3.6 %Worcester County: 2.9 %Baltimore city: 3 %Barnstable County: 2.6 %Berkshire County: 2.3 %Bristol County: 1.6 %Dukes County: 3.8 %Essex County: 1.6 %Hampden County: 2.7 %Hampshire County: 2.5 %Middlesex County: 0.5 %Norfolk County: 2.5 %Plymouth County: 0 %Suffolk County: 1.1 %Worcester County: 1.4 %Allegan County: 2 %Bay County: 0.8 %Benzie County: 2.7 %Berrien County: 2.1 %Cass County: 1.7 %Chippewa County: 1.6 %Clinton County: 0.5 %Genesee County: 1.2 %Huron County: 1.1 %Ingham County: 0.3 %Kalamazoo County: 0.4 %Kent County: 1.1 %Keweenaw County: 0 %Lenawee County: 0.5 %Macomb County: 4.5 %Manistee County: 1.3 %Mason County: 1.1 %Missaukee County: 0 %Monroe County: 0.8 %Muskegon County: 3.3 %Oakland County: 2.1 %Ottawa County: 1.7 %St. Clair County: 4.5 %Schoolcraft County: 2.5 %Tuscola County: 0 %Washtenaw County: 0.3 %Wayne County: 4.1 %Wexford County: 0 %Anoka County: 0.8 %Becker County: 0 %Carlton County: 0.3 %Cass County: 0 %Cook County: 0 %Crow Wing County: 0.3 %Dakota County: 1.6 %Goodhue County: 0.5 %Hennepin County: 0.8 %Lake County: 0.3 %Lyon County: 0.8 %Mille Lacs County: 0.5 %Olmsted County: 1.1 %Ramsey County: 1.7 %Rock County: 0 %St. Louis County: 0.3 %Scott County: 0.8 %Stearns County: 0.6 %Washington County: 0.6 %Winona County: 0 %Wright County: 1.1 %Adams County: 0.4 %Bolivar County: 1.6 %DeSoto County: 2.2 %Forrest County: 0 %Grenada County: 0 %Hancock County: 0.4 %Harrison County: 2.8 %Hinds County: 0.3 %Jackson County: 2.2 %Jones County: 0 %Lauderdale County: 0.5 %Lee County: 0.5 %Yalobusha County: 1.9 %Andrew County: 2.9 %Boone County: 0.9 %Buchanan County: 0 %Callaway County: 0.5 %Cass County: 0 %Cedar County: 0.3 %Clay County: 3.6 %Clinton County: 5.6 %Greene County: 0.3 %Jackson County: 0.3 %Jasper County: 1.6 %Jefferson County: 5.8 %Lincoln County: 5.6 %Monroe County: 1.3 %Perry County: 3.3 %St. Charles County: 9.2 %Ste. Genevieve County: 2.6 %St. Louis County: 4.4 %Stoddard County: 0.9 %Taney County: 0 %St. Louis city: 1.6 %Cascade County: 0 %Fergus County: 0 %Flathead County: 0 %Gallatin County: 0.5 %Glacier County: 0 %Lake County: 0 %Lewis and Clark County: 3.9 %Lincoln County: 1.1 %Missoula County: 12.9 %Powder River County: 0 %Powell County: 0 %Ravalli County: 2 %Richland County: 0 %Roosevelt County: 0 %Rosebud County: 0.5 %Sanders County: 0 %Sheridan County: 0.9 %Silver Bow County: 3.9 %Yellowstone County: 0 %Cass County: 1.3 %Dawson County: 0 %Douglas County: 1.6 %Garden County: 0 %Hall County: 0 %Knox County: 0 %Lancaster County: 0.3 %Sarpy County: 1 %Scotts Bluff County: 0 %Thomas County: 0 %Washington County: 0.8 %Churchill County: 0 %Clark County: 9 %Douglas County: 0 %Elko County: 0.3 %Lyon County: 0.5 %Mineral County: 0 %Nye County: 0 %Washoe County: 1.1 %White Pine County: 0.3 %Carson City: 0 %Belknap County: 1.4 %Cheshire County: 0.3 %Coos County: 1.4 %Grafton County: 0 %Hillsborough County: 2.2 %Merrimack County: 1.3 %Rockingham County: 1.1 %Atlantic County: 2.5 %Bergen County: 4.4 %Camden County: 6.6 %Cumberland County: 3 %Essex County: 4.7 %Gloucester County: 5.8 %Hudson County: 3.6 %Hunterdon County: 6.6 %Mercer County: 9 %Middlesex County: 7.4 %Monmouth County: 2.7 %Morris County: 2.5 %Ocean County: 7.2 %Passaic County: 3.5 %Union County: 1.1 %Warren County: 0.6 %Bernalillo County: 1.4 %Catron County: 0 %Chaves County: 0 %Doña Ana County: 3.3 %Eddy County: 0.5 %Grant County: 0.5 %Lea County: 0 %Lincoln County: 1 %Los Alamos County: 0 %Luna County: 1.1 %McKinley County: 0 %Rio Arriba County: 0 %Sandoval County: 0 %San Juan County: 2.7 %Santa Fe County: 0.3 %Socorro County: 0 %Taos County: 0 %Valencia County: 0 %Albany County: 1.6 %Bronx County: 3 %Chautauqua County: 4.4 %Chemung County: 0.8 %Dutchess County: 1.7 %Erie County: 1.9 %Essex County: 2.5 %Franklin County: 0 %Hamilton County: 0.3 %Herkimer County: 0.3 %Jefferson County: 2.8 %Kings County: 0.3 %Madison County: 1.1 %Monroe County: 1.9 %Nassau County: 0 %New York County: 1.9 %Niagara County: 1.6 %Oneida County: 0 %Onondaga County: 1.4 %Orange County: 2.5 %Oswego County: 1.1 %Putnam County: 2.2 %Queens County: 3 %Rensselaer County: 1.7 %Richmond County: 6 %Rockland County: 2.7 %Saratoga County: 1.1 %Schenectady County: 0.8 %Steuben County: 0 %Suffolk County: 6.8 %Tompkins County: 1.2 %Ulster County: 0.6 %Wayne County: 1.9 %Westchester County: 3.8 %Alamance County: 0 %Alexander County: 3.3 %Avery County: 1.9 %Buncombe County: 1.1 %Caldwell County: 1.9 %Carteret County: 0.3 %Caswell County: 1.6 %Catawba County: 0 %Chatham County: 0.8 %Cumberland County: 2.2 %Davidson County: 0 %Davie County: 3.7 %Duplin County: 0 %Durham County: 2.2 %Edgecombe County: 1.5 %Forsyth County: 6.3 %Franklin County: 1.9 %Gaston County: 0 %Graham County: 6.1 %Granville County: 2.8 %Guilford County: 5.2 %Haywood County: 3.7 %Hyde County: 0 %Jackson County: 1.2 %Johnston County: 2.3 %Lenoir County: 0.8 %Lincoln County: 3.8 %McDowell County: 0 %Macon County: 0.6 %Martin County: 0.8 %Mecklenburg County: 6.6 %Mitchell County: 0 %Montgomery County: 1.2 %New Hanover County: 0.3 %Person County: 5.2 %Pitt County: 1.2 %Robeson County: 0 %Rockingham County: 4.2 %Rowan County: 5.8 %Swain County: 0 %Union County: 3.2 %Wake County: 2.5 %Watauga County: 0 %Wayne County: 0 %Yancey County: 3.3 %Billings County: 0 %Burke County: 0 %Burleigh County: 0 %Cass County: 0.3 %Dunn County: 0 %McKenzie County: 0 %Mercer County: 0 %Oliver County: 0 %Ward County: 0 %Adams County: 0 %Allen County: 3.3 %Ashtabula County: 8.4 %Athens County: 0.8 %Butler County: 7.7 %Clark County: 2.9 %Clermont County: 4.1 %Clinton County: 4.2 %Columbiana County: 0 %Crawford County: 0.4 %Cuyahoga County: 9 %Delaware County: 3.8 %Fayette County: 1.4 %Franklin County: 5.2 %Geauga County: 3.7 %Greene County: 1.1 %Hamilton County: 8.5 %Hancock County: 0 %Jefferson County: 1.9 %Knox County: 1.9 %Lake County: 4.4 %Lawrence County: 4.6 %Licking County: 4.7 %Lorain County: 3.3 %Lucas County: 2.2 %Madison County: 3.8 %Mahoning County: 1.9 %Medina County: 1.9 %Miami County: 0.9 %Montgomery County: 5.8 %Noble County: 3.5 %Portage County: 1.5 %Preble County: 1.4 %Scioto County: 0 %Stark County: 6.8 %Summit County: 4.9 %Trumbull County: 1.9 %Warren County: 3 %Washington County: 4.7 %Wood County: 0.9 %Adair County: 0.5 %Caddo County: 0.3 %Canadian County: 1.1 %Carter County: 0 %Cherokee County: 1.7 %Cleveland County: 0.3 %Comanche County: 0.5 %Creek County: 0.6 %Dewey County: 0.5 %Ellis County: 0 %Jefferson County: 0.7 %Kay County: 0 %Lincoln County: 0 %Love County: 0.7 %McClain County: 0.3 %McCurtain County: 0.4 %Mayes County: 0.4 %Muskogee County: 0 %Oklahoma County: 2.5 %Osage County: 0.3 %Ottawa County: 0.8 %Pittsburg County: 0.3 %Sequoyah County: 0.4 %Tulsa County: 1.9 %Baker County: 0 %Benton County: 0 %Clackamas County: 0.9 %Columbia County: 0 %Crook County: 0.3 %Deschutes County: 0 %Douglas County: 0 %Grant County: 0.3 %Harney County: 0.6 %Jackson County: 0 %Jefferson County: 0.3 %Josephine County: 0.3 %Klamath County: 1.1 %Lake County: 0.5 %Lane County: 1.4 %Linn County: 0 %Marion County: 0.3 %Multnomah County: 0 %Umatilla County: 0 %Union County: 0.3 %Wallowa County: 0.3 %Wasco County: 0.3 %Washington County: 0.5 %Yamhill County: 0 %Adams County: 3.3 %Allegheny County: 16.7 %Armstrong County: 2.3 %Beaver County: 2.7 %Berks County: 7.1 %Blair County: 2.5 %Bucks County: 6.6 %Cambria County: 2.7 %Centre County: 2.2 %Chester County: 6.6 %Clearfield County: 7.3 %Cumberland County: 1.9 %Dauphin County: 3.3 %Delaware County: 2.5 %Elk County: 0.6 %Erie County: 2.5 %Franklin County: 1 %Greene County: 4.2 %Indiana County: 6.5 %Lackawanna County: 2.2 %Lancaster County: 7.7 %Lawrence County: 0.8 %Lehigh County: 5.5 %Luzerne County: 0.8 %Lycoming County: 2.6 %Mercer County: 3.3 %Monroe County: 4.2 %Montgomery County: 5.2 %Northampton County: 6.6 %Perry County: 1.4 %Philadelphia County: 7.7 %Somerset County: 1.6 %Tioga County: 4.7 %Washington County: 2.7 %Westmoreland County: 2.8 %York County: 5.5 %Kent County: 1.7 %Providence County: 2.2 %Washington County: 3.3 %Abbeville County: 0 %Aiken County: 0 %Anderson County: 1.5 %Berkeley County: 0.3 %Charleston County: 0.5 %Cherokee County: 1.2 %Chesterfield County: 0.9 %Colleton County: 0.6 %Darlington County: 1.2 %Edgefield County: 0 %Florence County: 0 %Georgetown County: 0 %Greenville County: 1.9 %Horry County: 0.4 %Lexington County: 0 %Oconee County: 0.6 %Pickens County: 1.7 %Richland County: 1.6 %Spartanburg County: 5 %York County: 0 %Brookings County: 0 %Brown County: 0 %Codington County: 0 %Custer County: 0.5 %Jackson County: 0 %Meade County: 0 %Minnehaha County: 0.3 %Pennington County: 0 %Union County: 0.5 %Anderson County: 2.9 %Blount County: 8.2 %Bradley County: 0 %Claiborne County: 0.6 %Davidson County: 1.6 %DeKalb County: 1.4 %Hamilton County: 6.6 %Jefferson County: 6.2 %Knox County: 4 %Lawrence County: 0 %Loudon County: 3.4 %McMinn County: 0 %Madison County: 0 %Meigs County: 4.5 %Montgomery County: 0 %Roane County: 0 %Rutherford County: 2.9 %Sevier County: 7.4 %Shelby County: 4.4 %Sullivan County: 1.6 %Sumner County: 7.3 %Union County: 0 %Williamson County: 3.8 %Wilson County: 3.8 %Bell County: 1.7 %Bexar County: 3 %Bowie County: 0 %Brazoria County: 5.8 %Brewster County: 0 %Cameron County: 0.6 %Collin County: 1.4 %Culberson County: 0 %Dallas County: 4.1 %Denton County: 3.3 %Ector County: 0 %Ellis County: 1.4 %El Paso County: 4.4 %Fayette County: 0 %Galveston County: 3.8 %Gregg County: 2.7 %Harris County: 10.4 %Harrison County: 2.5 %Hays County: 2.4 %Hidalgo County: 0 %Hood County: 1.9 %Hunt County: 0.3 %Jeff Davis County: 0 %Jefferson County: 6.3 %Johnson County: 2 %Kaufman County: 0 %Kleberg County: 0 %Lubbock County: 0 %McLennan County: 0.5 %Maverick County: 0 %Montgomery County: 1.7 %Navarro County: 0.3 %Nueces County: 2.2 %Orange County: 3.8 %Parker County: 0.5 %Polk County: 1.6 %Potter County: 0 %Randall County: 0 %Rockwall County: 1.4 %Smith County: 1.6 %Tarrant County: 4.9 %Travis County: 2.2 %Victoria County: 0.6 %Webb County: 0 %Wichita County: 0 %Box Elder County: 3 %Cache County: 5.5 %Daggett County: 0 %Davis County: 2.7 %Garfield County: 0 %Salt Lake County: 6.3 %San Juan County: 0.6 %Tooele County: 2.7 %Uintah County: 12.9 %Utah County: 3.8 %Washington County: 2.2 %Wayne County: 0 %Weber County: 6.6 %Bennington County: 0.5 %Chittenden County: 0.5 %Rutland County: 0.3 %Albemarle County: 1.5 %Arlington County: 7.4 %Caroline County: 2.8 %Carroll County: 0 %Charles City County: 2.2 %Chesterfield County: 2.7 %Culpeper County: 0 %Fairfax County: 6.3 %Fauquier County: 1 %Frederick County: 1.5 %Giles County: 1.7 %Hanover County: 6.6 %Henrico County: 3.3 %King William County: 0 %Loudoun County: 3 %Madison County: 2.5 %Page County: 0.8 %Prince Edward County: 0.9 %Prince William County: 1.1 %Roanoke County: 1.7 %Rockbridge County: 1.1 %Rockingham County: 0.6 %Stafford County: 3.7 %Warren County: 0 %Wythe County: 0.9 %Alexandria city: 3.8 %Bristol city: 0 %Fredericksburg city: 0 %Hampton city: 3.6 %Hopewell city: 0 %Lynchburg city: 0 %Newport News city: 0 %Norfolk city: 0 %Richmond city: 0 %Roanoke city: 0 %Salem city: 0 %Suffolk city: 4.7 %Virginia Beach city: 0.3 %Winchester city: 0 %Adams County: 0 %Asotin County: 0 %Benton County: 0 %Chelan County: 0.5 %Clallam County: 0 %Clark County: 0 %Columbia County: 0 %Cowlitz County: 0 %Franklin County: 0 %Grant County: 0 %Grays Harbor County: 0 %Jefferson County: 0 %King County: 0.8 %Kitsap County: 0 %Kittitas County: 0 %Klickitat County: 0 %Lewis County: 0 %Mason County: 0 %Okanogan County: 0 %Pend Oreille County: 0 %Pierce County: 0 %Skagit County: 2.2 %Snohomish County: 0 %Spokane County: 0.3 %Stevens County: 0 %Thurston County: 0 %Walla Walla County: 0 %Whatcom County: 0 %Whitman County: 0 %Yakima County: 1.1 %Berkeley County: 5 %Brooke County: 0.5 %Cabell County: 1.1 %Gilmer County: 0 %Greenbrier County: 1.4 %Hancock County: 2.7 %Harrison County: 0.9 %Kanawha County: 0.8 %Marion County: 0 %Marshall County: 0.9 %Monongalia County: 2.7 %Ohio County: 2.7 %Raleigh County: 0 %Tucker County: 0.8 %Wood County: 2.7 %Ashland County: 0 %Brown County: 2 %Chippewa County: 0 %Columbia County: 0 %Dane County: 1.1 %Dodge County: 0.9 %Door County: 3.7 %Eau Claire County: 0 %Florence County: 0 %Fond du Lac County: 0.5 %Forest County: 0 %Grant County: 0.8 %Jefferson County: 0.5 %Kenosha County: 4.2 %Kewaunee County: 3 %La Crosse County: 0.3 %Manitowoc County: 2.9 %Marathon County: 0 %Milwaukee County: 3.8 %Oneida County: 0 %Outagamie County: 1.5 %Ozaukee County: 2.4 %Racine County: 3.1 %Rock County: 0.5 %St. Croix County: 0.8 %Sauk County: 0.4 %Sheboygan County: 6.3 %Taylor County: 0.3 %Vernon County: 0 %Vilas County: 0 %Walworth County: 0 %Washington County: 0 %Waukesha County: 1.2 %Albany County: 0.8 %Big Horn County: 0 %Campbell County: 0.3 %Carbon County: 0.3 %Converse County: 0 %Crook County: 0.7 %Fremont County: 0.3 %Johnson County: 0 %Laramie County: 0 %Lincoln County: 0 %Natrona County: 0 %Park County: 0 %Platte County: 0 %Sheridan County: 0 %Sublette County: 0.5 %Sweetwater County: 0.8 %Teton County: 0 %Uinta County: 0.5 %

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