# Index of U.S. counties

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* References

## A

* Abbeville County, South Carolina
* Acadia Parish, Louisiana
* Accomack County, Virginia
* Ada County, Idaho
* Adair County: Iowa; Kentucky; Missouri; Oklahoma
* Adams County: Colorado; Idaho; Illinois; Indiana; Iowa; Mississippi; Nebraska; North Dakota; Ohio; Pennsylvania; Washington; Wisconsin
* Addison County, Vermont
* Adjuntas Municipality, Puerto Rico
* Aguada Municipality, Puerto Rico
* Aguadilla Municipality, Puerto Rico
* Aguas Buenas Municipality, Puerto Rico
* Aibonito Municipality, Puerto Rico
* Aiken County, South Carolina
* Aitkin County, Minnesota
* Alachua County, Florida
* Alamance County, North Carolina
* Alameda County, California
* Alamosa County, Colorado
* Albany County: New York; Wyoming
* Albemarle County, Virginia
* Alcona County, Michigan
* Alcorn County, Mississippi
* Aleutians East Borough, Alaska
* Aleutians West Census Area, Alaska
* Alexander County: Illinois; North Carolina
* Alfalfa County, Oklahoma
* Alger County, Michigan
* Allamakee County, Iowa
* Allegan County, Michigan
* Allegany County: Maryland; New York
* Alleghany County: North Carolina; Virginia
* Allegheny County, Pennsylvania
* Allen County: Indiana; Kansas; Kentucky; Ohio
* Allen Parish, Louisiana
* Allendale County, South Carolina
* Alpena County, Michigan
* Alpine County, California
* Amador County, California
* Amelia County, Virginia
* Amherst County, Virginia
* Amite County, Mississippi
* Añasco Municipality, Puerto Rico
* Municipality of Anchorage, Alaska (a consolidated city-borough under Alaska law)
* Anderson County: Kansas; Kentucky; South Carolina; Tennessee; Texas
* Andrew County, Missouri
* Andrews County, Texas
* Androscoggin County, Maine
* Angelina County, Texas
* Anne Arundel County, Maryland
* Anoka County, Minnesota
* Anson County, North Carolina
* Antelope County, Nebraska
* Antrim County, Michigan
* Apache County, Arizona
* Appanoose County, Iowa
* Appling County, Georgia
* Appomattox County, Virginia
* Aransas County, Texas
* Arapahoe County, Colorado
* Archer County, Texas
* Archuleta County, Colorado
* Arecibo Municipality, Puerto Rico
* Arenac County, Michigan
* Arkansas County, Arkansas
* Arlington County, Virginia
* Armstrong County: Pennsylvania; Texas
* Aroostook County, Maine
* Arroyo Municipality, Puerto Rico
* Arthur County, Nebraska
* Ascension Parish, Louisiana
* Ashe County, North Carolina
* Ashland County: Ohio; Wisconsin
* Ashley County, Arkansas
* Ashtabula County, Ohio
* Asotin County, Washington
* Assumption Parish, Louisiana
* Atascosa County, Texas
* Atchison County: Kansas; Missouri
* Athens County, Ohio
* Atkinson County, Georgia
* Atlantic County, New Jersey
* Atoka County, Oklahoma
* Attala County, Mississippi
* Audrain County, Missouri
* Audubon County, Iowa
* Auglaize County, Ohio
* Augusta County, Virginia
* Aurora County, South Dakota
* Austin County, Texas
* Autauga County, Alabama
* Avery County, North Carolina
* Avoyelles Parish, Louisiana

## B

* Baca County, Colorado
* Bacon County, Georgia
* Bailey County, Texas
* Baker County: Florida; Georgia; Oregon
* Baker Island, U.S. Minor Outlying Islands
* Baldwin County: Alabama; Georgia
* Ballard County, Kentucky
* Baltimore County, Maryland
* Bamberg County, South Carolina
* Bandera County, Texas
* Banks County, Georgia
* Banner County, Nebraska
* Bannock County, Idaho
* Baraga County, Michigan
* Barber County, Kansas
* Barbour County: Alabama; West Virginia
* Barceloneta Municipality, Puerto Rico
* Barnes County, North Dakota
* Barnstable County, Massachusetts
* Barnwell County, South Carolina
* Barranquitas Municipality, Puerto Rico
* Barren County, Kentucky
* Barron County, Wisconsin
* Barrow County, Georgia
* Barry County: Michigan; Missouri
* Bartholomew County, Indiana
* Barton County: Kansas; Missouri
* Bartow County, Georgia
* Bastrop County, Texas
* Bates County, Missouri
* Bath County: Kentucky; Virginia
* Baxter County, Arkansas
* Bay County: Florida; Michigan
* Bayamón Municipality, Puerto Rico
* Bayfield County, Wisconsin
* Baylor County, Texas
* Beadle County, South Dakota
* Bear Lake County, Idaho
* Beaufort County: North Carolina; South Carolina
* Beauregard Parish, Louisiana
* Beaver County: Oklahoma; Pennsylvania; Utah
* Beaverhead County, Montana
* Becker County, Minnesota
* Beckham County, Oklahoma
* Bedford County: Pennsylvania; Tennessee; Virginia
* Bee County, Texas
* Belknap County, New Hampshire
* Bell County: Kentucky; Texas
* Belmont County, Ohio
* Beltrami County, Minnesota
* Ben Hill County, Georgia
* Benewah County, Idaho
* Bennett County, South Dakota
* Bennington County, Vermont
* Benson County, North Dakota
* Bent County, Colorado
* Benton County: Arkansas; Indiana; Iowa; Minnesota; Mississippi; Missouri; Oregon; Tennessee; Washington
* Benzie County, Michigan
* Bergen County, New Jersey
* Berkeley County: South Carolina; West Virginia
* Berks County, Pennsylvania
* Berkshire County, Massachusetts
* Bernalillo County, New Mexico
* Berrien County: Georgia; Michigan
* Bertie County, North Carolina
* Bethel Census Area, Alaska
* Bexar County, Texas
* Bibb County: Alabama; Georgia
* Bienville Parish, Louisiana
* Big Horn County: Montana; Wyoming
* Big Stone County, Minnesota
* Billings County, North Dakota
* Bingham County, Idaho
* Black Hawk County, Iowa
* Blackford County, Indiana
* Bladen County, North Carolina
* Blaine County: Idaho; Montana; Nebraska; Oklahoma
* Blair County, Pennsylvania
* Blanco County, Texas
* Bland County, Virginia
* Bleckley County, Georgia
* Bledsoe County, Tennessee
* Blount County: Alabama; Tennessee
* Blue Earth County, Minnesota
* Boise County, Idaho
* Bolivar County, Mississippi
* Bollinger County, Missouri
* Bon Homme County, South Dakota
* Bond County, Illinois
* Bonner County, Idaho
* Bonneville County, Idaho
* Boone County: Arkansas; Illinois; Indiana; Iowa; Kentucky; Missouri; Nebraska; West Virginia
* Borden County, Texas
* Bosque County, Texas
* Bossier Parish, Louisiana
* Botetourt County, Virginia
* Bottineau County, North Dakota
* Boulder County, Colorado
* Boundary County, Idaho
* Bourbon County: Kansas; Kentucky
* Bowie County, Texas
* Bowman County, North Dakota
* Box Butte County, Nebraska
* Box Elder County, Utah
* Boyd County: Kentucky; Nebraska
* Boyle County, Kentucky
* Bracken County, Kentucky
* Bradford County: Florida; Pennsylvania
* Bradley County: Arkansas; Tennessee
* Branch County, Michigan
* Brantley County, Georgia
* Braxton County, West Virginia
* Brazoria County, Texas
* Brazos County, Texas
* Breathitt County, Kentucky
* Breckinridge County, Kentucky
* Bremer County, Iowa
* Brevard County, Florida
* Brewster County, Texas
* Briscoe County, Texas
* Bristol Bay Borough, Alaska
* Bristol County: Massachusetts; Rhode Island
* Broadwater County, Montana
* Bronx County, New York
* Brooke County, West Virginia
* Brookings County, South Dakota
* Brooks County: Georgia; Texas
* Broome County, New York
* City and County of Broomfield, Colorado
* Broward County, Florida
* Brown County: Illinois; Indiana; Kansas; Minnesota; Nebraska; Ohio; South Dakota; Texas; Wisconsin
* Brule County, South Dakota
* Brunswick County: North Carolina; Virginia
* Bryan County: Georgia; Oklahoma
* Buchanan County: Iowa; Missouri; Virginia
* Buckingham County, Virginia
* Bucks County, Pennsylvania
* Buena Vista County, Iowa
* Buffalo County: Nebraska; South Dakota; Wisconsin
* Bullitt County, Kentucky
* Bulloch County, Georgia
* Bullock County, Alabama
* Buncombe County, North Carolina
* Bureau County, Illinois
* Burke County: Georgia; North Carolina; North Dakota
* Burleigh County, North Dakota
* Burleson County, Texas
* Burlington County, New Jersey
* Burnet County, Texas
* Burnett County, Wisconsin
* Burt County, Nebraska
* Butler County: Alabama; Iowa; Kansas; Kentucky; Missouri; Nebraska; Ohio; Pennsylvania
* Butte County: California; Idaho; South Dakota
* Butts County, Georgia

## C

* Cabarrus County, North Carolina
* Cabell County, West Virginia
* Cabo Rojo Municipality, Puerto Rico
* Cache County, Utah
* Caddo County, Oklahoma
* Caddo Parish, Louisiana
* Caguas Municipality, Puerto Rico
* Calaveras County, California
* Calcasieu Parish, Louisiana
* Caldwell County: Kentucky; Missouri; North Carolina; Texas
* Caldwell Parish, Louisiana
* Caledonia County, Vermont
* Calhoun County: Alabama; Arkansas; Florida; Georgia; Illinois; Iowa; Michigan; Mississippi; South Carolina; Texas; West Virginia
* Callahan County, Texas
* Callaway County, Missouri
* Calloway County, Kentucky
* Calumet County, Wisconsin
* Calvert County, Maryland
* Camas County, Idaho
* Cambria County, Pennsylvania
* Camden County: Georgia; Missouri; New Jersey; North Carolina
* Cameron County: Pennsylvania; Texas
* Cameron Parish, Louisiana
* Camp County, Texas
* Campbell County: Kentucky; South Dakota; Tennessee; Virginia; Wyoming
* Camuy Municipality, Puerto Rico
* Canadian County, Oklahoma
* Candler County, Georgia
* Cannon County, Tennessee
* Canóvanas Municipality, Puerto Rico
* Canyon County, Idaho
* Cape Girardeau County, Missouri
* Cape May County, New Jersey
* Carbon County: Montana; Pennsylvania; Utah; Wyoming
* Caribou County, Idaho
* Carlisle County, Kentucky
* Carlton County, Minnesota
* Carolina Municipality, Puerto Rico
* Caroline County: Maryland; Virginia
* Carroll County: Arkansas; Georgia; Illinois; Indiana; Iowa; Kentucky; Maryland; Mississippi; Missouri; New Hampshire; Ohio; Tennessee; Virginia
* Carson County, Texas
* Carter County: Kentucky; Missouri; Montana; Oklahoma; Tennessee
* Carteret County, North Carolina
* Carver County, Minnesota
* Cascade County, Montana
* Casey County, Kentucky
* Cass County: Illinois; Indiana; Iowa; Michigan; Minnesota; Missouri; Nebraska; North Dakota; Texas
* Cassia County, Idaho
* Castro County, Texas
* Caswell County, North Carolina
* Catahoula Parish, Louisiana
* Cataño Municipality, Puerto Rico
* Catawba County, North Carolina
* Catoosa County, Georgia
* Catron County, New Mexico
* Cattaraugus County, New York
* Cavalier County, North Dakota
* Cayey Municipality, Puerto Rico
* Cayuga County, New York
* Cecil County, Maryland
* Cedar County: Iowa; Missouri; Nebraska
* Ceiba Municipality, Puerto Rico
* Centre County, Pennsylvania
* Cerro Gordo County, Iowa
* Chaffee County, Colorado
* Chambers County: Alabama; Texas
* Champaign County: Illinois; Ohio
* Chariton County, Missouri
* Charles City County, Virginia
* Charles County, Maryland
* Charles Mix County, South Dakota
* Charleston County, South Carolina
* Charlevoix County, Michigan
* Charlotte County: Florida; Virginia
* Charlton County, Georgia
* Chase County: Kansas; Nebraska
* Chatham County: Georgia; North Carolina
* Chattahoochee County, Georgia
* Chattooga County, Georgia
* Chautauqua County: Kansas; New York
* Chaves County, New Mexico
* Cheatham County, Tennessee
* Cheboygan County, Michigan
* Chelan County, Washington
* Chemung County, New York
* Chenango County, New York
* Cherokee County: Alabama; Georgia; Iowa; Kansas; North Carolina; Oklahoma; South Carolina; Texas
* Cherry County, Nebraska
* Cheshire County, New Hampshire
* Chester County: Pennsylvania; South Carolina; Tennessee
* Chesterfield County: South Carolina; Virginia
* Cheyenne County: Colorado; Kansas; Nebraska
* Chickasaw County: Iowa; Mississippi
* Chicot County, Arkansas
* Childress County, Texas
* Chilton County, Alabama
* Chippewa County: Michigan; Minnesota; Wisconsin
* Chisago County, Minnesota
* Chittenden County, Vermont
* Choctaw County: Alabama; Mississippi; Oklahoma
* Chouteau County, Montana
* Chowan County, North Carolina
* Christian County: Illinois; Kentucky; Missouri
* Chugach Census Area, Alaska
* Churchill County, Nevada
* Ciales Municipality, Puerto Rico
* Cibola County, New Mexico
* Cidra Municipality, Puerto Rico
* Cimarron County, Oklahoma
* Citrus County, Florida
* Clackamas County, Oregon
* Claiborne County: Mississippi; Tennessee
* Claiborne Parish, Louisiana
* Clallam County, Washington
* Clare County, Michigan
* Clarendon County, South Carolina
* Clarion County, Pennsylvania
* Clark County: Arkansas; Idaho; Illinois; Indiana; Kansas; Kentucky; Missouri; Nevada; Ohio; South Dakota; Washington; Wisconsin
* Clarke County: Alabama; Georgia; Iowa; Mississippi; Virginia
* Clatsop County, Oregon
* Clay County: Alabama; Arkansas; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Minnesota; Mississippi; Missouri; Nebraska; North Carolina; South Dakota; Tennessee; Texas; West Virginia
* Clayton County: Georgia; Iowa
* Clear Creek County, Colorado
* Clearfield County, Pennsylvania
* Clearwater County: Idaho; Minnesota
* Cleburne County: Alabama; Arkansas
* Clermont County, Ohio
* Cleveland County: Arkansas; North Carolina; Oklahoma
* Clinch County, Georgia
* Clinton County: Illinois; Indiana; Iowa; Kentucky; Michigan; Missouri; New York; Ohio; Pennsylvania
* Cloud County, Kansas
* Coahoma County, Mississippi
* Coal County, Oklahoma
* Coamo Municipality, Puerto Rico
* Cobb County, Georgia
* Cochise County, Arizona
* Cochran County, Texas
* Cocke County, Tennessee
* Coconino County, Arizona
* Codington County, South Dakota
* Coffee County: Alabama; Georgia; Tennessee
* Coffey County, Kansas
* Coke County, Texas
* Colbert County, Alabama
* Cole County, Missouri
* Coleman County, Texas
* Coles County, Illinois
* Colfax County: Nebraska; New Mexico
* Colleton County, South Carolina
* Collier County, Florida
* Collin County, Texas
* Collingsworth County, Texas
* Colorado County, Texas
* Colquitt County, Georgia
* Columbia County: Arkansas; Florida; Georgia; New York; Oregon; Pennsylvania; Washington; Wisconsin
* Columbiana County, Ohio
* Columbus County, North Carolina
* Colusa County, California
* Comal County, Texas
* Comanche County: Kansas; Oklahoma; Texas
* Comerío Municipality, Puerto Rico
* Concho County, Texas
* Concordia Parish, Louisiana
* Conecuh County, Alabama
* Conejos County, Colorado
* Contra Costa County, California
* Converse County, Wyoming
* Conway County, Arkansas
* Cook County: Georgia; Illinois; Minnesota
* Cooke County, Texas
* Cooper County, Missouri
* Coos County, Oregon
* Coös County, New Hampshire
* Coosa County, Alabama
* Copiah County, Mississippi
* Copper River Census Area, Alaska
* Corozal Municipality, Puerto Rico
* Corson County, South Dakota
* Cortland County, New York
* Coryell County, Texas
* Coshocton County, Ohio
* Costilla County, Colorado
* Cottle County, Texas
* Cotton County, Oklahoma
* Cottonwood County, Minnesota
* Covington County: Alabama; Mississippi
* Coweta County, Georgia
* Cowley County, Kansas
* Cowlitz County, Washington
* Craig County: Oklahoma; Virginia
* Craighead County, Arkansas
* Crane County, Texas
* Craven County, North Carolina
* Crawford County: Arkansas; Georgia; Illinois; Indiana; Iowa; Kansas; Michigan; Missouri; Ohio; Pennsylvania; Wisconsin
* Creek County, Oklahoma
* Crenshaw County, Alabama
* Crisp County, Georgia
* Crittenden County: Arkansas; Kentucky
* Crockett County: Tennessee; Texas
* Crook County: Oregon; Wyoming
* Crosby County, Texas
* Cross County, Arkansas
* Crow Wing County, Minnesota
* Crowley County, Colorado
* Culberson County, Texas
* Culebra Municipality, Puerto Rico
* Cullman County, Alabama
* Culpeper County, Virginia
* Cumberland County: Illinois; Kentucky; Maine; New Jersey; North Carolina; Pennsylvania; Tennessee; Virginia
* Cuming County, Nebraska
* Currituck County, North Carolina
* Curry County: New Mexico; Oregon
* Custer County: Colorado; Idaho; Montana; Nebraska; Oklahoma; South Dakota
* Cuyahoga County, Ohio

## D

* Dade County: Georgia; Missouri; (Florida)
* Daggett County, Utah
* Dakota County: Minnesota; Nebraska
* Dale County, Alabama
* Dallam County, Texas
* Dallas County: Alabama; Arkansas; Iowa; Missouri; Texas
* Dane County, Wisconsin
* Daniels County, Montana
* Dare County, North Carolina
* Darke County, Ohio
* Darlington County, South Carolina
* Dauphin County, Pennsylvania
* Davidson County: North Carolina; Tennessee
* Davie County, North Carolina
* Daviess County: Indiana; Kentucky; Missouri
* Davis County: Iowa; Utah
* Davison County, South Dakota
* Dawes County, Nebraska
* Dawson County: Georgia; Montana; Nebraska; Texas
* Day County, South Dakota
* De Baca County, New Mexico
* DeKalb County: Alabama; Georgia; Illinois; Indiana; Missouri; Tennessee
* De Soto Parish, Louisiana
* DeSoto County: Florida; Mississippi
* De Witt County, Illinois
* DeWitt County, Texas
* Deaf Smith County, Texas
* Dearborn County, Indiana
* Decatur County: Georgia; Indiana; Iowa; Kansas; Tennessee
* Deer Lodge County, Montana
* Defiance County, Ohio
* Del Norte County, California
* Delaware County: Indiana; Iowa; New York; Ohio; Oklahoma; Pennsylvania
* Delta County: Colorado; Michigan; Texas
* Denali Borough, Alaska
* Dent County, Missouri
* Denton County, Texas
* City and County of Denver, Colorado
* Des Moines County, Iowa
* Deschutes County, Oregon
* Desha County, Arkansas
* Deuel County: Nebraska; South Dakota
* Dewey County: Oklahoma; South Dakota
* Dickens County, Texas
* Dickenson County, Virginia
* Dickey County, North Dakota
* Dickinson County: Iowa; Kansas; Michigan
* Dickson County, Tennessee
* Dillingham Census Area, Alaska
* Dillon County, South Carolina
* Dimmit County, Texas
* Dinwiddie County, Virginia
* District of Columbia
* Divide County, North Dakota
* Dixie County, Florida
* Dixon County, Nebraska
* Doddridge County, West Virginia
* Dodge County: Georgia; Minnesota; Nebraska; Wisconsin
* Dolores County, Colorado
* Doña Ana County, New Mexico
* Doniphan County, Kansas
* Donley County, Texas
* Dooly County, Georgia
* Door County, Wisconsin
* Dorado Municipality, Puerto Rico
* Dorchester County: Maryland; South Carolina
* Dougherty County, Georgia
* Douglas County: Colorado; Georgia; Illinois; Kansas; Minnesota; Missouri; Nebraska; Nevada; Oregon; South Dakota; Washington; Wisconsin
* Drew County, Arkansas
* DuPage County, Illinois
* Dubois County, Indiana
* Dubuque County, Iowa
* Duchesne County, Utah
* Dukes County, Massachusetts
* Dundy County, Nebraska
* Dunklin County, Missouri
* Dunn County: North Dakota; Wisconsin
* Duplin County, North Carolina
* Durham County, North Carolina
* Dutchess County, New York
* Duval County: Florida; Texas
* Dyer County, Tennessee

## E

* Eagle County, Colorado
* Early County, Georgia
* East Baton Rouge Parish, Louisiana
* East Carroll Parish, Louisiana
* East Feliciana Parish, Louisiana
* Eastern District, American Samoa
* Eastland County, Texas
* Eaton County, Michigan
* Eau Claire County, Wisconsin
* Echols County, Georgia
* Ector County, Texas
* Eddy County: New Mexico; North Dakota
* Edgar County, Illinois
* Edgecombe County, North Carolina
* Edgefield County, South Carolina
* Edmonson County, Kentucky
* Edmunds County, South Dakota
* Edwards County: Illinois; Kansas; Texas
* Effingham County: Georgia; Illinois
* El Dorado County, California
* El Paso County: Colorado; Texas
* Elbert County: Colorado; Georgia
* Elk County: Kansas; Pennsylvania
* Elkhart County, Indiana
* Elko County, Nevada
* Elliott County, Kentucky
* Ellis County: Kansas; Oklahoma; Texas
* Ellsworth County, Kansas
* Elmore County: Alabama; Idaho
* Emanuel County, Georgia
* Emery County, Utah
* Emmet County: Iowa; Michigan
* Emmons County, North Dakota
* Erath County, Texas
* Erie County: New York; Ohio; Pennsylvania
* Escambia County: Alabama; Florida
* Esmeralda County, Nevada
* Essex County: Massachusetts; New Jersey; New York; Vermont; Virginia
* Estill County, Kentucky
* Etowah County, Alabama
* Eureka County, Nevada
* Evangeline Parish, Louisiana
* Evans County, Georgia

## F

* Fairbanks North Star Borough, Alaska
* Fairfax County, Virginia
* Fairfield County: Connecticut; Ohio; South Carolina
* Fajardo Municipality, Puerto Rico
* Fall River County, South Dakota
* Fallon County, Montana
* Falls County, Texas
* Fannin County: Georgia; Texas
* Faribault County, Minnesota
* Faulk County, South Dakota
* Faulkner County, Arkansas
* Fauquier County, Virginia
* Fayette County: Alabama; Georgia; Illinois; Indiana; Iowa; Kentucky; Ohio; Pennsylvania; Tennessee; Texas; West Virginia
* Fentress County, Tennessee
* Fergus County, Montana
* Ferry County, Washington
* Fillmore County: Minnesota; Nebraska
* Finney County, Kansas
* Fisher County, Texas
* Flagler County, Florida
* Flathead County, Montana
* Fleming County, Kentucky
* Florence County: South Carolina; Wisconsin
* Florida Municipality, Puerto Rico
* Floyd County: Georgia; Indiana; Iowa; Kentucky; Texas; Virginia
* Fluvanna County, Virginia
* Foard County, Texas
* Fond du Lac County, Wisconsin
* Ford County: Illinois; Kansas
* Forest County: Pennsylvania; Wisconsin
* Forrest County, Mississippi
* Forsyth County: Georgia; North Carolina
* Fort Bend County, Texas
* Foster County, North Dakota
* Fountain County, Indiana
* Franklin County: Alabama; Arkansas; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Maine; Massachusetts; Mississippi; Missouri; Nebraska; New York; North Carolina; Ohio; Pennsylvania; Tennessee; Texas; Vermont; Virginia; Washington
* Franklin Parish, Louisiana
* Frederick County: Maryland; Virginia
* Freeborn County, Minnesota
* Freestone County, Texas
* Fremont County: Colorado; Idaho; Iowa; Wyoming
* Fresno County, California
* Frio County, Texas
* Frontier County, Nebraska
* Fulton County: Arkansas; Georgia; Illinois; Indiana; Kentucky; New York; Ohio; Pennsylvania
* Furnas County, Nebraska

## G

* Gadsden County, Florida
* Gage County, Nebraska
* Gaines County, Texas
* Gallatin County: Illinois; Kentucky; Montana
* Gallia County, Ohio
* Galveston County, Texas
* Garden County, Nebraska
* Garfield County: Colorado; Montana; Nebraska; Oklahoma; Utah; Washington
* Garland County, Arkansas
* Garrard County, Kentucky
* Garrett County, Maryland
* Garvin County, Oklahoma
* Garza County, Texas
* Gasconade County, Missouri
* Gaston County, North Carolina
* Gates County, North Carolina
* Geary County, Kansas
* Geauga County, Ohio
* Gem County, Idaho
* Genesee County: Michigan; New York
* Geneva County, Alabama
* Gentry County, Missouri
* George County, Mississippi
* Georgetown County, South Carolina
* Gibson County: Indiana; Tennessee
* Gila County, Arizona
* Gilchrist County, Florida
* Giles County: Tennessee; Virginia
* Gillespie County, Texas
* Gilliam County, Oregon
* Gilmer County: Georgia; West Virginia
* Gilpin County, Colorado
* Glacier County, Montana
* Glades County, Florida
* Gladwin County, Michigan
* Glascock County, Georgia
* Glasscock County, Texas
* Glenn County, California
* Gloucester County: New Jersey; Virginia
* Glynn County, Georgia
* Gogebic County, Michigan
* Golden Valley County: Montana; North Dakota
* Goliad County, Texas
* Gonzales County, Texas
* Goochland County, Virginia
* Goodhue County, Minnesota
* Gooding County, Idaho
* Gordon County, Georgia
* Goshen County, Wyoming
* Gosper County, Nebraska
* Gove County, Kansas
* Grady County: Georgia; Oklahoma
* Grafton County, New Hampshire
* Graham County: Arizona; Kansas; North Carolina
* Grainger County, Tennessee
* Grand County: Colorado; Utah
* Grand Forks County, North Dakota
* Grand Isle County, Vermont
* Grand Traverse County, Michigan
* Granite County, Montana
* Grant County: Arkansas; Indiana; Kansas; Kentucky; Minnesota; Nebraska; New Mexico; North Dakota; Oklahoma; Oregon; South Dakota; Washington; West Virginia; Wisconsin
* Grant Parish, Louisiana
* Granville County, North Carolina
* Gratiot County, Michigan
* Graves County, Kentucky
* Gray County: Kansas; Texas
* Grays Harbor County, Washington
* Grayson County: Kentucky; Texas; Virginia
* Greeley County: Kansas; Nebraska
* Green County: Kentucky; Wisconsin
* Green Lake County, Wisconsin
* Greenbrier County, West Virginia
* Greene County: Alabama; Arkansas; Georgia; Illinois; Indiana; Iowa; Mississippi; Missouri; New York; North Carolina; Ohio; Pennsylvania; Tennessee; Virginia
* Greenlee County, Arizona
* Greensville County, Virginia
* Greenup County, Kentucky
* Greenville County, South Carolina
* Greenwood County: Kansas; South Carolina
* Greer County, Oklahoma
* Gregg County, Texas
* Gregory County, South Dakota
* Grenada County, Mississippi
* Griggs County, North Dakota
* Grimes County, Texas
* Grundy County: Illinois; Iowa; Missouri; Tennessee
* Guadalupe County: New Mexico; Texas
* Guam
* Guánica Municipality, Puerto Rico
* Guayama Municipality, Puerto Rico
* Guayanilla Municipality, Puerto Rico
* Guaynabo Municipality, Puerto Rico
* Guernsey County, Ohio
* Guilford County, North Carolina
* Gulf County, Florida
* Gunnison County, Colorado
* Gurabo Municipality, Puerto Rico
* Guthrie County, Iowa
* Gwinnett County, Georgia

## H

* Haakon County, South Dakota
* Habersham County, Georgia
* Haines Borough, Alaska
* Hale County: Alabama; Texas
* Halifax County: North Carolina; Virginia
* Hall County: Georgia; Nebraska; Texas
* Hamblen County, Tennessee
* Hamilton County: Florida; Illinois; Indiana; Iowa; Kansas; Nebraska; New York; Ohio; Tennessee; Texas
* Hamlin County, South Dakota
* Hampden County, Massachusetts
* Hampshire County: Massachusetts; West Virginia
* Hampton County, South Carolina
* Hancock County: Georgia; Illinois; Indiana; Iowa; Kentucky; Maine; Mississippi; Ohio; Tennessee; West Virginia
* Hand County, South Dakota
* Hanover County, Virginia
* Hansford County, Texas
* Hanson County, South Dakota
* Haralson County, Georgia
* Hardee County, Florida
* Hardeman County: Tennessee; Texas
* Hardin County: Illinois; Iowa; Kentucky; Ohio; Tennessee; Texas
* Harding County: New Mexico; South Dakota
* Hardy County, West Virginia
* Harford County, Maryland
* Harlan County: Kentucky; Nebraska
* Harmon County, Oklahoma
* Harnett County, North Carolina
* Harney County, Oregon
* Harper County: Kansas; Oklahoma
* Harris County: Georgia; Texas
* Harrison County: Indiana; Iowa; Kentucky; Mississippi; Missouri; Ohio; Texas; West Virginia
* Hart County: Georgia; Kentucky
* Hartford County, Connecticut
* Hartley County, Texas
* Harvey County, Kansas
* Haskell County: Kansas; Oklahoma; Texas
* Hatillo Municipality, Puerto Rico
* Hawaiʻi County, Hawaii
* Hawkins County, Tennessee
* Hayes County, Nebraska
* Hays County, Texas
* Haywood County: North Carolina; Tennessee
* Heard County, Georgia
* Hemphill County, Texas
* Hempstead County, Arkansas
* Henderson County: Illinois; Kentucky; North Carolina; Tennessee; Texas
* Hendricks County, Indiana
* Hendry County, Florida
* Hennepin County, Minnesota
* Henrico County, Virginia
* Henry County: Alabama; Georgia; Illinois; Indiana; Iowa; Kentucky; Missouri; Ohio; Tennessee; Virginia
* Herkimer County, New York
* Hernando County, Florida
* Hertford County, North Carolina
* Hettinger County, North Dakota
* Hickman County: Kentucky; Tennessee
* Hickory County, Missouri
* Hidalgo County: New Mexico; Texas
* Highland County: Ohio; Virginia
* Highlands County, Florida
* Hill County: Montana; Texas
* Hillsborough County: Florida; New Hampshire
* Hillsdale County, Michigan
* Hinds County, Mississippi
* Hinsdale County, Colorado
* Hitchcock County, Nebraska
* Hocking County, Ohio
* Hockley County, Texas
* Hodgeman County, Kansas
* Hoke County, North Carolina
* Holmes County: Florida; Mississippi; Ohio
* Holt County: Missouri; Nebraska
* Honolulu County, Hawaii
* Hood County, Texas
* Hood River County, Oregon
* Hooker County, Nebraska
* Hopkins County: Kentucky; Texas
* Hormigueros Municipality, Puerto Rico
* Horry County, South Carolina
* Hot Spring County, Arkansas
* Hot Springs County, Wyoming
* Houghton County, Michigan
* Houston County: Alabama; Georgia; Minnesota; Tennessee; Texas
* Howard County: Arkansas; Indiana; Iowa; Maryland; Missouri; Nebraska; Texas
* Howell County, Missouri
* Howland Island, U.S. Minor Outlying Islands
* Hubbard County, Minnesota
* Hudson County, New Jersey
* Hudspeth County, Texas
* Huerfano County, Colorado
* Hughes County: Oklahoma; South Dakota
* Humacao Municipality, Puerto Rico
* Humboldt County: California; Iowa; Nevada
* Humphreys County: Mississippi; Tennessee
* Hunt County, Texas
* Hunterdon County, New Jersey
* Huntingdon County, Pennsylvania
* Huntington County, Indiana
* Huron County: Michigan; Ohio
* Hutchinson County: South Dakota; Texas
* Hyde County: North Carolina; South Dakota

## I

* Iberia Parish, Louisiana
* Iberville Parish, Louisiana
* Ida County, Iowa
* Idaho County, Idaho
* Imperial County, California
* Independence County, Arkansas
* Indian River County, Florida
* Indiana County, Pennsylvania
* Ingham County, Michigan
* Inyo County, California
* Ionia County, Michigan
* Iosco County, Michigan
* Iowa County: Iowa; Wisconsin
* Iredell County, North Carolina
* Irion County, Texas
* Iron County: Michigan; Missouri; Utah; Wisconsin
* Iroquois County, Illinois
* Irwin County, Georgia
* Isabela Municipality, Puerto Rico
* Isabella County, Michigan
* Isanti County, Minnesota
* Island County, Washington
* Isle of Wight County, Virginia
* Issaquena County, Mississippi
* Itasca County, Minnesota
* Itawamba County, Mississippi
* Izard County, Arkansas

## J

* Jack County, Texas
* Jackson County: Alabama; Arkansas; Colorado; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Michigan; Minnesota; Mississippi; Missouri; North Carolina; Ohio; Oklahoma; Oregon; South Dakota; Tennessee; Texas; West Virginia; Wisconsin
* Jackson Parish, Louisiana
* James City County, Virginia
* Jarvis Island, U.S. Minor Outlying Islands
* Jasper County: Georgia; Illinois; Indiana; Iowa; Mississippi; Missouri; South Carolina; Texas
* Jay County, Indiana
* Jayuya Municipality, Puerto Rico
* Jeff Davis County: Georgia; Texas
* Jefferson County: Alabama; Arkansas; Colorado; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Mississippi; Missouri; Montana; Nebraska; New York; Ohio; Oklahoma; Oregon; Pennsylvania; Tennessee; Texas; Washington; West Virginia; Wisconsin
* Jefferson Parish, Louisiana
* Jefferson Davis County, Mississippi
* Jefferson Davis Parish, Louisiana
* Jenkins County, Georgia
* Jennings County, Indiana
* Jerauld County, South Dakota
* Jerome County, Idaho
* Jersey County, Illinois
* Jessamine County, Kentucky
* Jewell County, Kansas
* Jim Hogg County, Texas
* Jim Wells County, Texas
* Jo Daviess County, Illinois
* Johnson County: Arkansas; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Missouri; Nebraska; Tennessee; Texas; Wyoming
* Johnston Atoll, U.S. Minor Outlying Islands
* Johnston County: North Carolina; Oklahoma
* Jones County: Georgia; Iowa; Mississippi; North Carolina; South Dakota; Texas
* Josephine County, Oregon
* Juab County, Utah
* Juana Díaz Municipality, Puerto Rico
* Judith Basin County, Montana
* Juncos Municipality, Puerto Rico
* Juneau County, Wisconsin
* Juneau City and Borough, Alaska
* Juniata County, Pennsylvania

## K

* Kalamazoo County, Michigan
* Kalawao County, Hawaii
* Kalkaska County, Michigan
* Kanabec County, Minnesota
* Kanawha County, West Virginia
* Kandiyohi County, Minnesota
* Kane County: Illinois; Utah
* Kankakee County, Illinois
* Karnes County, Texas
* Kauai County, Hawaii
* Kaufman County, Texas
* Kay County, Oklahoma
* Kearney County, Nebraska
* Kearny County, Kansas
* Keith County, Nebraska
* Kemper County, Mississippi
* Kenai Peninsula Borough, Alaska
* Kendall County: Illinois; Texas
* Kenedy County, Texas
* Kennebec County, Maine
* Kenosha County, Wisconsin
* Kent County: Delaware; Maryland; Michigan; Rhode Island; Texas
* Kenton County, Kentucky
* Keokuk County, Iowa
* Kern County, California
* Kerr County, Texas
* Kershaw County, South Carolina
* Ketchikan Gateway Borough, Alaska
* Kewaunee County, Wisconsin
* Keweenaw County, Michigan
* Keya Paha County, Nebraska
* Kidder County, North Dakota
* Kimball County, Nebraska
* Kimble County, Texas
* King County: Texas; Washington
* King George County, Virginia
* King William County, Virginia
* King and Queen County, Virginia
* Kingfisher County, Oklahoma
* Kingman County, Kansas
* Kingman Reef, U.S. Minor Outlying Islands
* Kings County: California; New York
* Kingsbury County, South Dakota
* Kinney County, Texas
* Kiowa County: Colorado; Kansas; Oklahoma
* Kit Carson County, Colorado
* Kitsap County, Washington
* Kittitas County, Washington
* Kittson County, Minnesota
* Klamath County, Oregon
* Kleberg County, Texas
* Klickitat County, Washington
* Knott County, Kentucky
* Knox County: Illinois; Indiana; Kentucky; Maine; Missouri; Nebraska; Ohio; Tennessee; Texas
* Kodiak Island Borough, Alaska
* Koochiching County, Minnesota
* Kootenai County, Idaho
* Kosciusko County, Indiana
* Kossuth County, Iowa
* Kusilvak Census Area, Alaska

## L

* La Crosse County, Wisconsin
* La Paz County, Arizona
* La Plata County, Colorado
* La Salle County, Texas
* La Salle Parish, Louisiana
* Labette County, Kansas
* Lac qui Parle County, Minnesota
* Lackawanna County, Pennsylvania
* Laclede County, Missouri
* Lafayette County: Arkansas; Florida; Mississippi; Missouri; Wisconsin
* Lafayette Parish, Louisiana
* Lafourche Parish, Louisiana
* LaGrange County, Indiana
* Lajas Municipality, Puerto Rico
* Lake County: California; Colorado; Florida; Illinois; Indiana; Michigan; Minnesota; Montana; Ohio; Oregon; South Dakota; Tennessee
* Lake and Peninsula Borough, Alaska
* Lake of the Woods County, Minnesota
* Lamar County: Alabama; Georgia; Mississippi; Texas
* Lamb County, Texas
* Lamoille County, Vermont
* LaMoure County, North Dakota
* Lampasas County, Texas
* Lancaster County: Nebraska; Pennsylvania; South Carolina; Virginia
* Lander County, Nevada
* Lane County: Kansas; Oregon
* Langlade County, Wisconsin
* Lanier County, Georgia
* Lapeer County, Michigan
* LaPorte County, Indiana
* Laramie County, Wyoming
* Lares Municipality, Puerto Rico
* Larimer County, Colorado
* LaRue County, Kentucky
* LaSalle County, Illinois
* Las Animas County, Colorado
* Las Marías Municipality, Puerto Rico
* Las Piedras Municipality, Puerto Rico
* Lassen County, California
* Latah County, Idaho
* Latimer County, Oklahoma
* Lauderdale County: Alabama; Mississippi; Tennessee
* Laurel County, Kentucky
* Laurens County: Georgia; South Carolina
* Lavaca County, Texas
* Lawrence County: Alabama; Arkansas; Illinois; Indiana; Kentucky; Mississippi; Missouri; Ohio; Pennsylvania; South Dakota; Tennessee
* Le Flore County, Oklahoma
* Le Sueur County, Minnesota
* Lea County, New Mexico
* Leake County, Mississippi
* Leavenworth County, Kansas
* Lebanon County, Pennsylvania
* Lee County: Alabama; Arkansas; Florida; Georgia; Illinois; Iowa; Kentucky; Mississippi; North Carolina; South Carolina; Texas; Virginia
* Leelanau County, Michigan
* Leflore County, Mississippi
* Lehigh County, Pennsylvania
* Lemhi County, Idaho
* Lenawee County, Michigan
* Lenoir County, North Carolina
* Leon County: Florida; Texas
* Leslie County, Kentucky
* Letcher County, Kentucky
* Levy County, Florida
* Lewis County: Idaho; Kentucky; Missouri; New York; Tennessee; Washington; West Virginia
* Lewis and Clark County, Montana
* Lexington County, South Carolina
* Liberty County: Florida; Georgia; Montana; Texas
* Licking County, Ohio
* Limestone County: Alabama; Texas
* Lincoln County: Arkansas; Colorado; Georgia; Idaho; Kansas; Kentucky; Maine; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Mexico; North Carolina; Oklahoma; Oregon; South Dakota; Tennessee; Washington; West Virginia; Wisconsin; Wyoming
* Lincoln Parish, Louisiana
* Linn County: Iowa; Kansas; Missouri; Oregon
* Lipscomb County, Texas
* Litchfield County, Connecticut
* Little River County, Arkansas
* Live Oak County, Texas
* Livingston County: Illinois; Kentucky; Michigan; Missouri; New York
* Livingston Parish, Louisiana
* Llano County, Texas
* Logan County: Arkansas; Colorado; Illinois; Kansas; Kentucky; Nebraska; North Dakota; Ohio; Oklahoma; West Virginia
* Loíza Municipality, Puerto Rico
* Long County, Georgia
* Lonoke County, Arkansas
* Lorain County, Ohio
* Los Alamos County, New Mexico
* Los Angeles County, California
* Loudon County, Tennessee
* Loudoun County, Virginia
* Louisa County: Iowa; Virginia
* Loup County, Nebraska
* Love County, Oklahoma
* Loving County, Texas
* Lowndes County: Alabama; Georgia; Mississippi
* Lubbock County, Texas
* Lucas County: Iowa; Ohio
* Luce County, Michigan
* Lumpkin County, Georgia
* Luna County, New Mexico
* Lunenburg County, Virginia
* Luquillo Municipality, Puerto Rico
* Luzerne County, Pennsylvania
* Lycoming County, Pennsylvania
* Lyman County, South Dakota
* Lynn County, Texas
* Lyon County: Iowa; Kansas; Kentucky; Minnesota; Nevada

## M

* Mackinac County, Michigan
* Macomb County, Michigan
* Macon County: Alabama; Georgia; Illinois; Missouri; North Carolina; Tennessee
* Macoupin County, Illinois
* Madera County, California
* Madison County: Alabama; Arkansas; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kentucky; Mississippi; Missouri; Montana; Nebraska; New York; North Carolina; Ohio; Tennessee; Texas; Virginia
* Madison Parish, Louisiana
* Magoffin County, Kentucky
* Mahaska County, Iowa
* Mahnomen County, Minnesota
* Mahoning County, Ohio
* Major County, Oklahoma
* Malheur County, Oregon
* Manatee County, Florida
* Manatí Municipality, Puerto Rico
* Manistee County, Michigan
* Manitowoc County, Wisconsin
* Manu'a District, American Samoa
* Marathon County, Wisconsin
* Marengo County, Alabama
* Maricao Municipality, Puerto Rico
* Maricopa County, Arizona
* Maries County, Missouri
* Marin County, California
* Marinette County, Wisconsin
* Marion County: Alabama; Arkansas; Florida; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Mississippi; Missouri; Ohio; Oregon; South Carolina; Tennessee; Texas; West Virginia
* Mariposa County, California
* Marlboro County, South Carolina
* Marquette County: Michigan; Wisconsin
* Marshall County: Alabama; Illinois; Indiana; Iowa; Kansas; Kentucky; Minnesota; Mississippi; Oklahoma; South Dakota; Tennessee; West Virginia
* Martin County: Florida; Indiana; Kentucky; Minnesota; North Carolina; Texas
* Mason County: Illinois; Kentucky; Michigan; Texas; Washington; West Virginia
* Massac County, Illinois
* Matagorda County, Texas
* Matanuska-Susitna Borough, Alaska
* Mathews County, Virginia
* Maui County, Hawaii
* Maunabo Municipality, Puerto Rico
* Maury County, Tennessee
* Maverick County, Texas
* Mayagüez Municipality, Puerto Rico
* Mayes County, Oklahoma
* McClain County, Oklahoma
* McCone County, Montana
* McCook County, South Dakota
* McCormick County, South Carolina
* McCracken County, Kentucky
* McCreary County, Kentucky
* McCulloch County, Texas
* McCurtain County, Oklahoma
* McDonald County, Missouri
* McDonough County, Illinois
* McDowell County: North Carolina; West Virginia
* McDuffie County, Georgia
* McHenry County: Illinois; North Dakota
* McIntosh County: Georgia; North Dakota; Oklahoma
* McKean County, Pennsylvania
* McKenzie County, North Dakota
* McKinley County, New Mexico
* McLean County: Illinois; Kentucky; North Dakota
* McLennan County, Texas
* McLeod County, Minnesota
* McMinn County, Tennessee
* McMullen County, Texas
* McNairy County, Tennessee
* McPherson County: Kansas; Nebraska; South Dakota
* Meade County: Kansas; Kentucky; South Dakota
* Meagher County, Montana
* Mecklenburg County: North Carolina; Virginia
* Mecosta County, Michigan
* Medina County: Ohio; Texas
* Meeker County, Minnesota
* Meigs County: Ohio; Tennessee
* Mellette County, South Dakota
* Menard County: Illinois; Texas
* Mendocino County, California
* Menifee County, Kentucky
* Menominee County: Michigan; Wisconsin
* Merced County, California
* Mercer County: Illinois; Kentucky; Missouri; New Jersey; North Dakota; Ohio; Pennsylvania; West Virginia
* Meriwether County, Georgia
* Merrick County, Nebraska
* Merrimack County, New Hampshire
* Mesa County, Colorado
* Metcalfe County, Kentucky
* Miami County: Indiana; Kansas; Ohio
* Miami-Dade County, Florida
* Middlesex County: Connecticut; Massachusetts; New Jersey; Virginia
* Midland County: Michigan; Texas
* Midway Atoll, U.S. Minor Outlying Islands
* Mifflin County, Pennsylvania
* Milam County, Texas
* Millard County, Utah
* Mille Lacs County, Minnesota
* Miller County: Arkansas; Georgia; Missouri
* Mills County: Iowa; Texas
* Milwaukee County, Wisconsin
* Miner County, South Dakota
* Mineral County: Colorado; Montana; Nevada; West Virginia
* Mingo County, West Virginia
* Minidoka County, Idaho
* Minnehaha County, South Dakota
* Missaukee County, Michigan
* Mississippi County: Arkansas; Missouri
* Missoula County, Montana
* Mitchell County: Georgia; Iowa; Kansas; North Carolina; Texas
* Mobile County, Alabama
* Moca Municipality, Puerto Rico
* Modoc County, California
* Moffat County, Colorado
* Mohave County, Arizona
* Moniteau County, Missouri
* Monmouth County, New Jersey
* Mono County, California
* Monona County, Iowa
* Monongalia County, West Virginia
* Monroe County: Alabama; Arkansas; Florida; Georgia; Illinois; Indiana; Iowa; Kentucky; Michigan; Mississippi; Missouri; New York; Ohio; Pennsylvania; Tennessee; West Virginia; Wisconsin
* Montague County, Texas
* Montcalm County, Michigan
* Monterey County, California
* Montezuma County, Colorado
* Montgomery County: Alabama; Arkansas; Georgia; Illinois; Indiana; Iowa; Kansas; Kentucky; Maryland; Mississippi; Missouri; New York; North Carolina; Ohio; Pennsylvania; Tennessee; Texas; Virginia
* Montmorency County, Michigan
* Montour County, Pennsylvania
* Montrose County, Colorado
* Moody County, South Dakota
* Moore County: North Carolina; Tennessee; Texas
* Mora County, New Mexico
* Morehouse Parish, Louisiana
* Morgan County: Alabama; Colorado; Georgia; Illinois; Indiana; Kentucky; Missouri; Ohio; Tennessee; Utah; West Virginia
* Morovis Municipality, Puerto Rico
* Morrill County, Nebraska
* Morris County: Kansas; New Jersey; Texas
* Morrison County, Minnesota
* Morrow County: Ohio; Oregon
* Morton County: Kansas; North Dakota
* Motley County, Texas
* Moultrie County, Illinois
* Mountrail County, North Dakota
* Mower County, Minnesota
* Muhlenberg County, Kentucky
* Multnomah County, Oregon
* Murray County: Georgia; Minnesota; Oklahoma
* Muscatine County, Iowa
* Muscogee County, Georgia
* Muskegon County, Michigan
* Muskingum County, Ohio
* Muskogee County, Oklahoma
* Musselshell County, Montana

## N

* Nacogdoches County, Texas
* Naguabo Municipality, Puerto Rico
* Nance County, Nebraska
* Town and County of Nantucket, Massachusetts
* Napa County, California
* Naranjito Municipality, Puerto Rico
* Nash County, North Carolina
* Nassau County: Florida; New York
* Natchitoches Parish, Louisiana
* Natrona County, Wyoming
* Navajo County, Arizona
* Navarro County, Texas
* Navassa Island, U.S. Minor Outlying Islands
* Nelson County: Kentucky; North Dakota; Virginia
* Nemaha County: Kansas; Nebraska
* Neosho County, Kansas
* Neshoba County, Mississippi
* Ness County, Kansas
* Nevada County: Arkansas; California
* New Castle County, Delaware
* New Hanover County, North Carolina
* New Haven County, Connecticut
* New Kent County, Virginia
* New London County, Connecticut
* New Madrid County, Missouri
* New York County, New York
* Newaygo County, Michigan
* Newberry County, South Carolina
* Newport County, Rhode Island
* Newton County: Arkansas; Georgia; Indiana; Mississippi; Missouri; Texas
* Nez Perce County, Idaho
* Niagara County, New York
* Nicholas County: Kentucky; West Virginia
* Nicollet County, Minnesota
* Niobrara County, Wyoming
* Noble County: Indiana; Ohio; Oklahoma
* Nobles County, Minnesota
* Nodaway County, Missouri
* Nolan County, Texas
* Nome Census Area, Alaska
* Norfolk County, Massachusetts
* Norman County, Minnesota
* North Slope Borough, Alaska
* Northampton County: North Carolina; Pennsylvania; Virginia
* Northern Islands Municipality, Northern Mariana Islands
* Northumberland County: Pennsylvania; Virginia
* Northwest Arctic Borough, Alaska
* Norton County, Kansas
* Nottoway County, Virginia
* Nowata County, Oklahoma
* Noxubee County, Mississippi
* Nuckolls County, Nebraska
* Nueces County, Texas
* Nye County, Nevada

## O

* O'Brien County, Iowa
* Oakland County, Michigan
* Obion County, Tennessee
* Ocean County, New Jersey
* Oceana County, Michigan
* Ochiltree County, Texas
* Oconee County: Georgia; South Carolina
* Oconto County, Wisconsin
* Ogemaw County, Michigan
* Oglala Lakota County, South Dakota
* Ogle County, Illinois
* Oglethorpe County, Georgia
* Ohio County: Indiana; Kentucky; West Virginia
* Okaloosa County, Florida
* Okanogan County, Washington
* Okeechobee County, Florida
* Okfuskee County, Oklahoma
* Oklahoma County, Oklahoma
* Okmulgee County, Oklahoma
* Oktibbeha County, Mississippi
* Oldham County: Kentucky; Texas
* Oliver County, North Dakota
* Olmsted County, Minnesota
* Oneida County: Idaho; New York; Wisconsin
* Onondaga County, New York
* Onslow County, North Carolina
* Ontario County, New York
* Ontonagon County, Michigan
* Orange County: California; Florida; Indiana; New York; North Carolina; Texas; Vermont; Virginia
* Orangeburg County, South Carolina
* Oregon County, Missouri
* Orleans County: New York; Vermont
* Orleans Parish, Louisiana
* Orocovis Municipality, Puerto Rico
* Osage County: Kansas; Missouri; Oklahoma
* Osborne County, Kansas
* Osceola County: Florida; Iowa; Michigan
* Oscoda County, Michigan
* Oswego County, New York
* Otero County: Colorado; New Mexico
* Otoe County, Nebraska
* Otsego County: Michigan; New York
* Ottawa County: Kansas; Michigan; Ohio; Oklahoma
* Otter Tail County, Minnesota
* Ouachita County, Arkansas
* Ouachita Parish, Louisiana
* Ouray County, Colorado
* Outagamie County, Wisconsin
* Overton County, Tennessee
* Owen County: Indiana; Kentucky
* Owsley County, Kentucky
* Owyhee County, Idaho
* Oxford County, Maine
* Ozark County, Missouri
* Ozaukee County, Wisconsin

## P

* Pacific County, Washington
* Page County: Iowa; Virginia
* Palm Beach County, Florida
* Palmyra Atoll, U.S. Minor Outlying Islands
* Palo Alto County, Iowa
* Palo Pinto County, Texas
* Pamlico County, North Carolina
* Panola County: Mississippi; Texas
* Park County: Colorado; Montana; Wyoming
* Parke County, Indiana
* Parker County, Texas
* Parmer County, Texas
* Pasco County, Florida
* Pasquotank County, North Carolina
* Passaic County, New Jersey
* Patillas Municipality, Puerto Rico
* Patrick County, Virginia
* Paulding County: Georgia; Ohio
* Pawnee County: Kansas; Nebraska; Oklahoma
* Payette County, Idaho
* Payne County, Oklahoma
* Peach County, Georgia
* Pearl River County, Mississippi
* Pecos County, Texas
* Pembina County, North Dakota
* Pemiscot County, Missouri
* Pend Oreille County, Washington
* Pender County, North Carolina
* Pendleton County: Kentucky; West Virginia
* Pennington County: Minnesota; South Dakota
* Penobscot County, Maine
* Peñuelas Municipality, Puerto Rico
* Peoria County, Illinois
* Pepin County, Wisconsin
* Perkins County: Nebraska; South Dakota
* Perquimans County, North Carolina
* Perry County: Alabama; Arkansas; Illinois; Indiana; Kentucky; Mississippi; Missouri; Ohio; Pennsylvania; Tennessee
* Pershing County, Nevada
* Person County, North Carolina
* Petersburg Borough, Alaska
* Petroleum County, Montana
* Pettis County, Missouri
* Phelps County: Missouri; Nebraska
* Philadelphia County, Pennsylvania
* Phillips County: Arkansas; Colorado; Kansas; Montana
* Piatt County, Illinois
* Pickaway County, Ohio
* Pickens County: Alabama; Georgia; South Carolina
* Pickett County, Tennessee
* Pierce County: Georgia; Nebraska; North Dakota; Washington; Wisconsin
* Pike County: Alabama; Arkansas; Georgia; Illinois; Indiana; Kentucky; Mississippi; Missouri; Ohio; Pennsylvania
* Pima County, Arizona
* Pinal County, Arizona
* Pine County, Minnesota
* Pinellas County, Florida
* Pipestone County, Minnesota
* Piscataquis County, Maine
* Pitkin County, Colorado
* Pitt County, North Carolina
* Pittsburg County, Oklahoma
* Pittsylvania County, Virginia
* Piute County, Utah
* Placer County, California
* Plaquemines Parish, Louisiana
* Platte County: Missouri; Nebraska; Wyoming
* Pleasants County, West Virginia
* Plumas County, California
* Plymouth County: Iowa; Massachusetts
* Pocahontas County: Iowa; West Virginia
* Poinsett County, Arkansas
* Pointe Coupee Parish, Louisiana
* Polk County: Arkansas; Florida; Georgia; Iowa; Minnesota; Missouri; Nebraska; North Carolina; Oregon; Tennessee; Texas; Wisconsin
* Ponce Municipality, Puerto Rico
* Pondera County, Montana
* Pontotoc County: Mississippi; Oklahoma
* Pope County: Arkansas; Illinois; Minnesota
* Portage County: Ohio; Wisconsin
* Porter County, Indiana
* Posey County, Indiana
* Pottawatomie County: Kansas; Oklahoma
* Pottawattamie County, Iowa
* Potter County: Pennsylvania; South Dakota; Texas
* Powder River County, Montana
* Powell County: Kentucky; Montana
* Power County, Idaho
* Poweshiek County, Iowa
* Powhatan County, Virginia
* Prairie County: Arkansas; Montana
* Pratt County, Kansas
* Preble County, Ohio
* Prentiss County, Mississippi
* Presidio County, Texas
* Presque Isle County, Michigan
* Preston County, West Virginia
* Price County, Wisconsin
* Prince Edward County, Virginia
* Prince George County, Virginia
* Prince George's County, Maryland
* Prince William County, Virginia
* Prince of Wales – Hyder Census Area, Alaska
* Providence County, Rhode Island
* Prowers County, Colorado
* Pueblo County, Colorado
* Pulaski County: Arkansas; Georgia; Illinois; Indiana; Kentucky; Missouri; Virginia
* Pushmataha County, Oklahoma
* Putnam County: Florida; Georgia; Illinois; Indiana; Missouri; New York; Ohio; Tennessee; West Virginia

## Q

* Quay County, New Mexico
* Quebradillas Municipality, Puerto Rico
* Queen Anne's County, Maryland
* Queens County, New York
* Quitman County: Georgia; Mississippi

## R

* Rabun County, Georgia
* Racine County, Wisconsin
* Rains County, Texas
* Raleigh County, West Virginia
* Ralls County, Missouri
* Ramsey County: Minnesota; North Dakota
* Randall County, Texas
* Randolph County: Alabama; Arkansas; Georgia; Illinois; Indiana; Missouri; North Carolina; West Virginia
* Rankin County, Mississippi
* Ransom County, North Dakota
* Rapides Parish, Louisiana
* Rappahannock County, Virginia
* Ravalli County, Montana
* Rawlins County, Kansas
* Ray County, Missouri
* Reagan County, Texas
* Real County, Texas
* Red Lake County, Minnesota
* Red River County, Texas
* Red River Parish, Louisiana
* Red Willow County, Nebraska
* Redwood County, Minnesota
* Reeves County, Texas
* Refugio County, Texas
* Reno County, Kansas
* Rensselaer County, New York
* Renville County: Minnesota; North Dakota
* Republic County, Kansas
* Reynolds County, Missouri
* Rhea County, Tennessee
* Rice County: Kansas; Minnesota
* Rich County, Utah
* Richardson County, Nebraska
* Richland County: Illinois; Montana; North Dakota; Ohio; South Carolina; Wisconsin
* Richland Parish, Louisiana
* Richmond County: Georgia; New York; North Carolina; Virginia
* Riley County, Kansas
* Rincón Municipality, Puerto Rico
* Ringgold County, Iowa
* Rio Arriba County, New Mexico
* Rio Blanco County, Colorado
* Rio Grande County, Colorado
* Río Grande Municipality, Puerto Rico
* Ripley County: Indiana; Missouri
* Ritchie County, West Virginia
* Riverside County, California
* Roane County: Tennessee; West Virginia
* Roanoke County, Virginia
* Roberts County: South Dakota; Texas
* Robertson County: Kentucky; Tennessee; Texas
* Robeson County, North Carolina
* Rock County: Minnesota; Nebraska; Wisconsin
* Rock Island County, Illinois
* Rockbridge County, Virginia
* Rockcastle County, Kentucky
* Rockdale County, Georgia
* Rockingham County: New Hampshire; North Carolina; Virginia
* Rockland County, New York
* Rockwall County, Texas
* Roger Mills County, Oklahoma
* Rogers County, Oklahoma
* Rolette County, North Dakota
* Rooks County, Kansas
* Roosevelt County: Montana; New Mexico
* Roscommon County, Michigan
* Rose Atoll, American Samoa
* Roseau County, Minnesota
* Rosebud County, Montana
* Ross County, Ohio
* Rota Municipality, Northern Mariana Islands
* Routt County, Colorado
* Rowan County: Kentucky; North Carolina
* Runnels County, Texas
* Rush County: Indiana; Kansas
* Rusk County: Texas; Wisconsin
* Russell County: Alabama; Kansas; Kentucky; Virginia
* Rutherford County: North Carolina; Tennessee
* Rutland County, Vermont

## S

* Sabana Grande Municipality, Puerto Rico
* Sabine County, Texas
* Sabine Parish, Louisiana
* Sac County, Iowa
* Sacramento County, California
* Sagadahoc County, Maine
* Saginaw County, Michigan
* Saguache County, Colorado
* Saint Bernard Parish, Louisiana
* Saint Charles County, Missouri
* Saint Charles Parish, Louisiana
* Saint Clair County: Alabama; Illinois; Michigan; Missouri
* Saint Croix County, Wisconsin
* Saint Croix Island, U.S. Virgin Islands
* Saint Francis County, Arkansas
* Saint Francois County, Missouri
* Saint Helena Parish, Louisiana
* Saint James Parish, Louisiana
* Saint John Island, U.S. Virgin Islands
* Saint John the Baptist Parish, Louisiana
* Saint Johns County, Florida
* Saint Joseph County: Indiana; Michigan
* Saint Landry Parish, Louisiana
* Saint Lawrence County, New York
* Saint Louis County: Minnesota; Missouri
* Saint Lucie County, Florida
* Saint Martin Parish, Louisiana
* Saint Mary Parish, Louisiana
* Saint Mary's County, Maryland
* Saint Tammany Parish, Louisiana
* Saint Thomas Island, U.S. Virgin Islands
* Sainte Genevieve County, Missouri
* Saipan Municipality, Northern Mariana Islands
* Salem County, New Jersey
* Salinas Municipality, Puerto Rico
* Saline County: Arkansas; Illinois; Kansas; Missouri; Nebraska
* Salt Lake County, Utah
* Saluda County, South Carolina
* Sampson County, North Carolina
* San Augustine County, Texas
* San Benito County, California
* San Bernardino County, California
* San Diego County, California
* City and County of San Francisco, California
* San Germán Municipality, Puerto Rico
* San Jacinto County, Texas
* San Joaquin County, California
* San Juan County: Colorado; New Mexico; Utah; Washington
* San Juan Municipality, Puerto Rico
* San Lorenzo Municipality, Puerto Rico
* San Luis Obispo County, California
* San Mateo County, California
* San Miguel County: Colorado; New Mexico
* San Patricio County, Texas
* San Saba County, Texas
* San Sebastián Municipality, Puerto Rico
* Sanborn County, South Dakota
* Sanders County, Montana
* Sandoval County, New Mexico
* Sandusky County, Ohio
* Sangamon County, Illinois
* Sanilac County, Michigan
* Sanpete County, Utah
* Santa Barbara County, California
* Santa Clara County, California
* Santa Cruz County: Arizona; California
* Santa Fe County, New Mexico
* Santa Isabel Municipality, Puerto Rico
* Santa Rosa County, Florida
* Sarasota County, Florida
* Saratoga County, New York
* Sargent County, North Dakota
* Sarpy County, Nebraska
* Sauk County, Wisconsin
* Saunders County, Nebraska
* Sawyer County, Wisconsin
* Schenectady County, New York
* Schleicher County, Texas
* Schley County, Georgia
* Schoharie County, New York
* Schoolcraft County, Michigan
* Schuyler County: Illinois; Missouri; New York
* Schuylkill County, Pennsylvania
* Scioto County, Ohio
* Scotland County: Missouri; North Carolina
* Scott County: Arkansas; Illinois; Indiana; Iowa; Kansas; Kentucky; Minnesota; Mississippi; Missouri; Tennessee; Virginia
* Scotts Bluff County, Nebraska
* Screven County, Georgia
* Scurry County, Texas
* Searcy County, Arkansas
* Sebastian County, Arkansas
* Sedgwick County: Colorado; Kansas
* Seminole County: Florida; Georgia; Oklahoma
* Seneca County: New York; Ohio
* Sequatchie County, Tennessee
* Sequoyah County, Oklahoma
* Sevier County: Arkansas; Tennessee; Utah
* Seward County: Kansas; Nebraska
* Shackelford County, Texas
* Shannon County, Missouri
* Sharkey County, Mississippi
* Sharp County, Arkansas
* Shasta County, California
* Shawano County, Wisconsin
* Shawnee County, Kansas
* Sheboygan County, Wisconsin
* Shelby County: Alabama; Illinois; Indiana; Iowa; Kentucky; Missouri; Ohio; Tennessee; Texas
* Shenandoah County, Virginia
* Sherburne County, Minnesota
* Sheridan County: Kansas; Montana; Nebraska; North Dakota; Wyoming
* Sherman County: Kansas; Nebraska; Oregon; Texas
* Shiawassee County, Michigan
* Shoshone County, Idaho
* Sibley County, Minnesota
* Sierra County: California; New Mexico
* Silver Bow County, Montana
* Simpson County: Kentucky; Mississippi
* Sioux County: Iowa; Nebraska; North Dakota
* Siskiyou County, California
* Sitka, Alaska
* Skagit County, Washington
* Skagway-Hoonah-Angoon Census Area, Alaska
* Skamania County, Washington
* Slope County, North Dakota
* Smith County: Kansas; Mississippi; Tennessee; Texas
* Smyth County, Virginia
* Snohomish County, Washington
* Snyder County, Pennsylvania
* Socorro County, New Mexico
* Solano County, California
* Somerset County: Maine; Maryland; New Jersey; Pennsylvania
* Somervell County, Texas
* Sonoma County, California
* Southampton County, Virginia
* Southeast Fairbanks Census Area, Alaska
* Spalding County, Georgia
* Spartanburg County, South Carolina
* Spencer County: Indiana; Kentucky
* Spink County, South Dakota
* Spokane County, Washington
* Spotsylvania County, Virginia
* Stafford County: Kansas; Virginia
* Stanislaus County, California
* Stanley County, South Dakota
* Stanly County, North Carolina
* Stanton County: Kansas; Nebraska
* Stark County: Illinois; North Dakota; Ohio
* Starke County, Indiana
* Starr County, Texas
* Stearns County, Minnesota
* Steele County: Minnesota; North Dakota
* Stephens County: Georgia; Oklahoma; Texas
* Stephenson County, Illinois
* Sterling County, Texas
* Steuben County: Indiana; New York
* Stevens County: Kansas; Minnesota; Washington
* Stewart County: Georgia; Tennessee
* Stillwater County, Montana
* Stoddard County, Missouri
* Stokes County, North Carolina
* Stone County: Arkansas; Mississippi; Missouri
* Stonewall County, Texas
* Storey County, Nevada
* Story County, Iowa
* Strafford County, New Hampshire
* Stutsman County, North Dakota
* Sublette County, Wyoming
* Suffolk County: Massachusetts; New York
* Sullivan County: Indiana; Missouri; New Hampshire; New York; Pennsylvania; Tennessee
* Sully County, South Dakota
* Summers County, West Virginia
* Summit County: Colorado; Ohio; Utah
* Sumner County: Kansas; Tennessee
* Sumter County: Alabama; Florida; Georgia; South Carolina
* Sunflower County, Mississippi
* Surry County: North Carolina; Virginia
* Susquehanna County, Pennsylvania
* Sussex County: Delaware; New Jersey; Virginia
* Sutter County, California
* Sutton County, Texas
* Suwannee County, Florida
* Swain County, North Carolina
* Swains Island, American Samoa
* Sweet Grass County, Montana
* Sweetwater County, Wyoming
* Swift County, Minnesota
* Swisher County, Texas
* Switzerland County, Indiana

## T

* Talbot County: Georgia; Maryland
* Taliaferro County, Georgia
* Talladega County, Alabama
* Tallahatchie County, Mississippi
* Tallapoosa County, Alabama
* Tama County, Iowa
* Taney County, Missouri
* Tangipahoa Parish, Louisiana
* Taos County, New Mexico
* Tarrant County, Texas
* Tate County, Mississippi
* Tattnall County, Georgia
* Taylor County: Florida; Georgia; Iowa; Kentucky; Texas; West Virginia; Wisconsin
* Tazewell County: Illinois; Virginia
* Tehama County, California
* Telfair County, Georgia
* Teller County, Colorado
* Tensas Parish, Louisiana
* Terrebonne Parish, Louisiana
* Terrell County: Georgia; Texas
* Terry County, Texas
* Teton County: Idaho; Montana; Wyoming
* Texas County: Missouri; Oklahoma
* Thayer County, Nebraska
* Thomas County: Georgia; Kansas; Nebraska
* Throckmorton County, Texas
* Thurston County: Nebraska; Washington
* Tift County, Georgia
* Tillamook County, Oregon
* Tillman County, Oklahoma
* Tinian Municipality, Northern Mariana Islands
* Tioga County: New York; Pennsylvania
* Tippah County, Mississippi
* Tippecanoe County, Indiana
* Tipton County: Indiana; Tennessee
* Tishomingo County, Mississippi
* Titus County, Texas
* Toa Alta Municipality, Puerto Rico
* Toa Baja Municipality, Puerto Rico
* Todd County: Kentucky; Minnesota; South Dakota
* Tolland County, Connecticut
* Tom Green County, Texas
* Tompkins County, New York
* Tooele County, Utah
* Toole County, Montana
* Toombs County, Georgia
* Torrance County, New Mexico
* Towner County, North Dakota
* Towns County, Georgia
* Traill County, North Dakota
* Transylvania County, North Carolina
* Traverse County, Minnesota
* Travis County, Texas
* Treasure County, Montana
* Trego County, Kansas
* Trempealeau County, Wisconsin
* Treutlen County, Georgia
* Trigg County, Kentucky
* Trimble County, Kentucky
* Trinity County: California; Texas
* Tripp County, South Dakota
* Troup County, Georgia
* Trousdale County, Tennessee
* Trujillo Alto Municipality, Puerto Rico
* Trumbull County, Ohio
* Tucker County, West Virginia
* Tulare County, California
* Tulsa County, Oklahoma
* Tunica County, Mississippi
* Tuolumne County, California
* Turner County: Georgia; South Dakota
* Tuscaloosa County, Alabama
* Tuscarawas County, Ohio
* Tuscola County, Michigan
* Twiggs County, Georgia
* Twin Falls County, Idaho
* Tyler County: Texas; West Virginia
* Tyrrell County, North Carolina

## U

* Uinta County, Wyoming
* Uintah County, Utah
* Ulster County, New York
* Umatilla County, Oregon
* Unicoi County, Tennessee
* Union County: Arkansas; Florida; Georgia; Illinois; Indiana; Iowa; Kentucky; Mississippi; New Jersey; New Mexico; North Carolina; Ohio; Oregon; Pennsylvania; South Carolina; South Dakota; Tennessee
* Union Parish, Louisiana
* Upshur County: Texas; West Virginia
* Upson County, Georgia
* Upton County, Texas
* Utah County, Utah
* Utuado Municipality, Puerto Rico
* Uvalde County, Texas

## V

* Val Verde County, Texas
* Valencia County, New Mexico
* Valley County: Idaho; Montana; Nebraska
* Van Buren County: Arkansas; Iowa; Michigan; Tennessee
* Van Wert County, Ohio
* Van Zandt County, Texas
* Vance County, North Carolina
* Vanderburgh County, Indiana
* Vega Alta Municipality, Puerto Rico
* Vega Baja Municipality, Puerto Rico
* Venango County, Pennsylvania
* Ventura County, California
* Vermilion County, Illinois
* Vermilion Parish, Louisiana
* Vermillion County, Indiana
* Vernon County: Missouri; Wisconsin
* Vernon Parish, Louisiana
* Victoria County, Texas
* Vieques Municipality, Puerto Rico
* Vigo County, Indiana
* Vilas County, Wisconsin
* Villalba Municipality, Puerto Rico
* Vinton County, Ohio
* Volusia County, Florida

## W

* Wabash County: Illinois; Indiana
* Wabasha County, Minnesota
* Wabaunsee County, Kansas
* Wadena County, Minnesota
* Wagoner County, Oklahoma
* Wahkiakum County, Washington
* Wake County, North Carolina
* Wake Island, U.S. Minor Outlying Islands
* Wakulla County, Florida
* Waldo County, Maine
* Walker County: Alabama; Georgia; Texas
* Walla Walla County, Washington
* Wallace County, Kansas
* Waller County, Texas
* Wallowa County, Oregon
* Walsh County, North Dakota
* Walthall County, Mississippi
* Walton County: Florida; Georgia
* Walworth County: South Dakota; Wisconsin
* Wapello County, Iowa
* Ward County: North Dakota; Texas
* Ware County, Georgia
* Warren County: Georgia; Illinois; Indiana; Iowa; Kentucky; Mississippi; Missouri; New Jersey; New York; North Carolina; Ohio; Pennsylvania; Tennessee; Virginia
* Warrick County, Indiana
* Wasatch County, Utah
* Wasco County, Oregon
* Waseca County, Minnesota
* Washakie County, Wyoming
* Washburn County, Wisconsin
* Washington County: Alabama; Arkansas; Colorado; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Maine; Maryland; Minnesota; Mississippi; Missouri; Nebraska; New York; North Carolina; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; Tennessee; Texas; Utah; Vermont; Virginia; Wisconsin
* Washington Parish, Louisiana
* Washita County, Oklahoma
* Washoe County, Nevada
* Washtenaw County, Michigan
* Watauga County, North Carolina
* Watonwan County, Minnesota
* Waukesha County, Wisconsin
* Waupaca County, Wisconsin
* Waushara County, Wisconsin
* Wayne County: Georgia; Illinois; Indiana; Iowa; Kentucky; Michigan; Mississippi; Missouri; Nebraska; New York; North Carolina; Ohio; Pennsylvania; Tennessee; Utah; West Virginia
* Weakley County, Tennessee
* Webb County, Texas
* Weber County, Utah
* Webster County: Georgia; Iowa; Kentucky; Mississippi; Missouri; Nebraska; West Virginia
* Webster Parish, Louisiana
* Weld County, Colorado
* Wells County: Indiana; North Dakota
* West Baton Rouge Parish, Louisiana
* West Carroll Parish, Louisiana
* West Feliciana Parish, Louisiana
* Westchester County, New York
* Western District, American Samoa
* Westmoreland County: Pennsylvania; Virginia
* Weston County, Wyoming
* Wetzel County, West Virginia
* Wexford County, Michigan
* Wharton County, Texas
* Whatcom County, Washington
* Wheatland County, Montana
* Wheeler County: Georgia; Nebraska; Oregon; Texas
* White County: Arkansas; Georgia; Illinois; Indiana; Tennessee
* White Pine County, Nevada
* Whiteside County, Illinois
* Whitfield County, Georgia
* Whitley County: Indiana; Kentucky
* Whitman County, Washington
* Wibaux County, Montana
* Wichita County: Kansas; Texas
* Wicomico County, Maryland
* Wilbarger County, Texas
* Wilcox County: Alabama; Georgia
* Wilkes County: Georgia; North Carolina
* Wilkin County, Minnesota
* Wilkinson County: Georgia; Mississippi
* Will County, Illinois
* Willacy County, Texas
* Williams County: North Dakota; Ohio
* Williamsburg County, South Carolina
* Williamson County: Illinois; Tennessee; Texas
* Wilson County: Kansas; North Carolina; Tennessee; Texas
* Windham County: Connecticut; Vermont
* Windsor County, Vermont
* Winkler County, Texas
* Winn Parish, Louisiana
* Winnebago County: Illinois; Iowa; Wisconsin
* Winneshiek County, Iowa
* Winona County, Minnesota
* Winston County: Alabama; Mississippi
* Wirt County, West Virginia
* Wise County: Texas; Virginia
* Wolfe County, Kentucky
* Wood County: Ohio; Texas; West Virginia; Wisconsin
* Woodbury County, Iowa
* Woodford County: Illinois; Kentucky
* Woodruff County, Arkansas
* Woods County, Oklahoma
* Woodson County, Kansas
* Woodward County, Oklahoma
* Worcester County: Maryland; Massachusetts
* Worth County: Georgia; Iowa; Missouri
* Wright County: Iowa; Minnesota; Missouri
* Wyandot County, Ohio
* Wyandotte County, Kansas
* Wyoming County: New York; Pennsylvania; West Virginia
* Wythe County, Virginia

## Y

* Yabucoa Municipality, Puerto Rico
* Yadkin County, North Carolina
* Yakima County, Washington
* Yakutat City and Borough, Alaska
* Yalobusha County, Mississippi
* Yamhill County, Oregon
* Yancey County, North Carolina
* Yankton County, South Dakota
* Yates County, New York
* Yauco Municipality, Puerto Rico
* Yavapai County, Arizona
* Yazoo County, Mississippi
* Yell County, Arkansas
* Yellow Medicine County, Minnesota
* Yellowstone County, Montana
* Yoakum County, Texas
* Yolo County, California
* York County: Maine; Nebraska; Pennsylvania; South Carolina; Virginia
* Young County, Texas
* Yuba County, California
* Yukon–Koyukuk Census Area, Alaska
* Yuma County: Arizona; Colorado

## Z

* Zapata County, Texas
* Zavala County, Texas
* Ziebach County, South Dakota