This is an alphabetical list of counties and county equivalents in the United States, including independent cities, Alaska boroughs and census areas, Connecticut's historical counties and councils of governments, Louisiana parishes, the District of Columbia, and the equivalents in U.S. territories.
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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 Alexandria, Virginia 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 Anchorage, Alaska 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, Maryland 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, Virginia 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 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, Virginia 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 Capitol Planning Region, Connecticut 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 City, Nevada 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 Charlottesville, 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 Chesapeake, Virginia 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