List of U.S. county name etymologies (A–D)
This is a list of U.S. county name etymologies, covering the letters A to D.
A
- Abbeville County, South Carolina: Abbeville is named for the French town of Abbeville.
- Acadia Parish, Louisiana: Acdia is named for named for the colonial region of Acadia in the modern-day Maritime Provinces of Canada.
- Accomack County, Virginia: Accomack is named for accawmacke, a Native American word describing the Eastern Shore meaning across the water place.
- Ada County, Idaho: Ada is named for Ada Riggs, the first pioneer child born in the area and the daughter of H.C. Riggs, a cofounder of Boise, Idaho.
- Adair County, Iowa: Adair is named for John Adair, a general in the War of 1812 and the eighth governor of Kentucky.
- Adair County, Kentucky: Adair is named for John Adair, a general in the War of 1812 and the eighth governor of Kentucky.
- Adair County, Missouri: Adair is named for John Adair, a general in the War of 1812 and the eighth governor of Kentucky.
- Adair County, Oklahoma: Adair is named for the Adair family of the Cherokee tribe.
- Adams County, Colorado: Adams is named for Alva Adams, the fifth governor of Colorado.
- Adams County, Idaho: Adams is named for John Adams, the second president of the United States.
- Adams County, Illinois: Adams is named for John Quincy Adams, the sixth president of the United States.
- Adams County, Indiana: Adams is named for John Quincy Adams, the sixth president of the United States.
- Adams County, Iowa: Adams is named for either John Adams, the second president of the United States; or his son, John Quincy Adams, the sixth president of the United States.
- Adams County, Mississippi: Adams is named for John Adams, the second president of the United States.
- Adams County, Nebraska: Adams is named for John Adams, the second president of the United States.
- Adams County, North Dakota: Adams is named for John Quincy Adams, a railroad agent who was instrumental in having the Chicago, Milwaukee and St. Paul Railroad be built through North Dakota.
- Adams County, Ohio: Adams is named for probably John Adams, the second president of the United States; although his son, John Quincy Adams, the sixth president of the United States, has been suggested as the county's namesake.
- Adams County, Pennsylvania: Adams is named for John Adams, the second president of the United States.
- Adams County, Washington: Adams is named for John Adams, the second president of the United States.
- Adams County, Wisconsin: Adams is named for John Quincy Adams, the sixth president of the United States.
- Addison County, Vermont: Addison is named for Joseph Addison, the English writer and politician.
- Aiken County, South Carolina: Aiken is named for William Aiken, the president of the South Carolina Railroad.
- Aitkin County, Minnesota: Aitkin is named for William Alexander Aitken, a fur trader in the region.
- Alachua County, Florida: Alachua is named for a Native American word meaning "sinkhole" in either the Muskogee or Timucua languages.
- Alamance County, North Carolina: Alamance is named for Alamance Creek.
- Alameda County, California: Alameda is named for a Spanish word for avenue shaded by trees or cottonwood grove.
- Alamosa County, Colorado: Alamosa is named for a Spanish word meaning cottonwood grove.
- Albany County, New York: Albany is named for King James II of England, who also was the Duke of York and Albany.
- Albany County, Wyoming: Albany is named for the city of Albany, New York.
- Albemarle County, Virginia: Albemarle is named for Willem Anne van Keppel, 2nd Earl of Albemarle, a British nobleman.
- Alcona County, Michigan: Alcona is named for a word invented by Henry Rowe Schoolcraft meaning the excellent plain with al from Arabic for the, co the root of a word for plain or prairie, and na for excellent.
- Alcorn County, Mississippi: Alcorn is named for James Lusk Alcorn, the twenty-eighth governor of Mississippi.
- Aleutians East Borough, Alaska: Aleutians East is named for its location in the eastern segment of the Aleutian Islands.
- Aleutians West Census Area, Alaska: Aleutians West is named for its location in the western segment of the Aleutian Islands.
- Alexander County, Illinois: Alexander is named for William M. Alexander, a pioneer of the county.
- Alexander County, North Carolina: Alexander is named for the Alexander family, of whom several members were leaders in colonial North Carolina.
- Alfalfa County, Oklahoma: Alfalfa is named for William Henry David "Alfalfa Bill" Murray, the ninth governor of Oklahoma.
- Alger County, Michigan: Alger is named for Russell Alexander Alger, the twentieth governor of Michigan.
- Allamakee County, Iowa: Allamakee is named for either Allan Makee, a trapper and trader, or an uncertain Native American origin.
- Allegan County, Michigan: Allegan is named for
- Allegany County, Maryland: Allegany is named for
- Allegany County, New York: Allegany is named for
- Alleghany County, North Carolina: Alleghany is named for
- Alleghany County, Virginia: Alleghany is named for
- Allegheny County, Pennsylvania: Allegheny is named for
- Allen County, Indiana: Allen is named for
- Allen County, Kansas: Allen is named for
- Allen County, Kentucky: Allen is named for
- Allen County, Ohio: Allen is named for
- Allen Parish, Louisiana: Allen is named for
- Allendale County, South Carolina: Allendale is named for
- Alpena County, Michigan: Alpena is named for
- Alpine County, California: Alpine is named for
- Amador County, California
- Amelia County, Virginia
- Amherst County, Virginia
- Amite County, Mississippi
- Anderson County, Kansas
- Anderson County, Kentucky
- Anderson County, South Carolina
- Anderson County, Tennessee
- Anderson County, 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
- Arenac County, Michigan
- Arkansas County, Arkansas
- Arlington County, Virginia
- Armstrong County, Pennsylvania
- Armstrong County, Texas
- Aroostook County, Maine
- Arthur County, Nebraska
- Ascension Parish, Louisiana
- Ashe County, North Carolina
- Ashland County, Ohio
- Ashland County, Wisconsin
- Ashley County, Arkansas
- Ashtabula County, Ohio
- Asotin County, Washington
- Assumption Parish, Louisiana
- Atascosa County, Texas
- Atchison County, Kansas
- Atchison County, 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
- Baker County, Georgia
- Baker County, Oregon
- Baldwin County, Alabama
- Baldwin County, 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
- Barbour County, West Virginia
- Barnes County, North Dakota
- Barnstable County, Massachusetts
- Barnwell County, South Carolina
- Barren County, Kentucky
- Barron County, Wisconsin
- Barrow County, Georgia
- Barry County, Michigan
- Barry County, Missouri
- Bartholomew County, Indiana
- Barton County, Kansas
- Barton County, Missouri
- Bartow County, Georgia
- Bastrop County, Texas
- Bates County, Missouri
- Bath County, Kentucky
- Bath County, Virginia
- Baxter County, Arkansas
- Bay County, Florida
- Bay County, Michigan
- Bayfield County, Wisconsin
- Baylor County, Texas
- Beadle County, South Dakota
- Bear Lake County, Idaho
- Beaufort County, North Carolina
- Beaufort County, South Carolina
- Beauregard Parish, Louisiana
- Beaver County, Oklahoma
- Beaver County, Pennsylvania
- Beaver County, Utah
- Beaverhead County, Montana
- Becker County, Minnesota
- Beckham County, Oklahoma
- Bedford County, Pennsylvania
- Bedford County, Tennessee
- Bedford County, Virginia
- Bee County, Texas
- Belknap County, New Hampshire
- Bell County, Kentucky
- Bell County, 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
- Benton County, Indiana
- Benton County, Iowa
- Benton County, Minnesota
- Benton County, Mississippi
- Benton County, Missouri
- Benton County, Oregon
- Benton County, Tennessee
- Benton County, Washington
- Benzie County, Michigan
- Bergen County, New Jersey
- Berkeley County, South Carolina
- Berkeley County, West Virginia
- Berks County, Pennsylvania
- Berkshire County, Massachusetts
- Bernalillo County, New Mexico
- Berrien County, Georgia
- Berrien County, Michigan
- Bertie County, North Carolina
- Bethel Census Area, Alaska
- Bexar County, Texas
- Bibb County, Alabama
- Bibb County, Georgia
- Bienville Parish, Louisiana
- Big Horn County, Montana
- Big Horn County, 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
- Blaine County, Montana
- Blaine County, Nebraska
- Blaine County, Oklahoma
- Blair County, Pennsylvania
- Blanco County, Texas
- Bland County, Virginia
- Bleckley County, Georgia
- Bledsoe County, Tennessee
- Blount County, Alabama
- Blount County, 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
- Boone County, Illinois
- Boone County, Indiana
- Boone County, Iowa
- Boone County, Kentucky
- Boone County, Missouri
- Boone County, Nebraska
- Boone County, 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
- Bourbon County, Kentucky
- Bowie County, Texas
- Bowman County, North Dakota
- Box Butte County, Nebraska
- Box Elder County, Utah
- Boyd County, Kentucky
- Boyd County, Nebraska
- Boyle County, Kentucky
- Bracken County, Kentucky
- Bradford County, Florida
- Bradford County, Pennsylvania
- Bradley County, Arkansas
- Bradley County, 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
- Bristol County, Rhode Island
- Broadwater County, Montana
- Bronx County, New York
- Brooke County, West Virginia
- Brookings County, South Dakota
- Brooks County, Georgia
- Brooks County, Texas
- Broome County, New York
- Broward County, Florida
- Brown County, Illinois
- Brown County, Indiana
- Brown County, Kansas
- Brown County, Minnesota
- Brown County, Nebraska
- Brown County, Ohio
- Brown County, South Dakota
- Brown County, Texas
- Brown County, Wisconsin
- Brule County, South Dakota
- Brunswick County, North Carolina
- Brunswick County, Virginia
- Bryan County, Georgia
- Bryan County, Oklahoma
- Buchanan County, Iowa
- Buchanan County, Missouri
- Buchanan County, Virginia
- Buckingham County, Virginia
- Bucks County, Pennsylvania
- Buena Vista County, Iowa
- Buffalo County, Nebraska
- Buffalo County, South Dakota
- Buffalo County, Wisconsin
- Bullitt County, Kentucky
- Bulloch County, Georgia
- Bullock County, Alabama
- Buncombe County, North Carolina
- Bureau County, Illinois
- Burke County, Georgia
- Burke County, North Carolina
- Burke County, 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
- Butler County, Iowa
- Butler County, Kansas,
- Butler County, Kentucky
- Butler County, Missouri
- Butler County, Nebraska
- Butler County, Ohio
- Butler County, Pennsylvania
- Butte County, California
- Butte County, Idaho
- Butte County, South Dakota
- Butts County, Georgia
C
- Cabarrus County, North Carolina
- Cabell County, West Virginia
- Cache County, Utah
- Caddo County, Oklahoma
- Caddo Parish, Louisiana
- Calaveras County, California
- Calcasieu Parish, Louisiana
- Caldwell County, Kentucky
- Caldwell County, Missouri
- Caldwell County, North Carolina
- Caldwell County, Texas
- Caldwell Parish, Louisiana
- Caledonia County, Vermont
- Calhoun County, Alabama
- Calhoun County, Arkansas
- Calhoun County, Florida
- Calhoun County, Georgia
- Calhoun County, Illinois
- Calhoun County, Iowa
- Calhoun County, Michigan
- Calhoun County, Mississippi
- Calhoun County, South Carolina
- Calhoun County, Texas
- Calhoun County, 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
- Camden County, Missouri
- Camden County, New Jersey
- Camden County, North Carolina
- Cameron County, Pennsylvania
- Cameron County, Texas
- Cameron Parish, Louisiana
- Camp County, Texas
- Campbell County, Kentucky
- Campbell County, South Dakota
- Campbell County, Tennessee
- Campbell County, Virginia
- Campbell County, Wyoming
- Canadian County, Oklahoma
- Candler County, Georgia
- Cannon County, Tennessee
- Canyon County, Idaho
- Cape Girardeau County, Missouri
- Cape May County, New Jersey
- Carbon County, Montana
- Carbon County, Pennsylvania
- Carbon County, Utah
- Carbon County, Wyoming
- Caribou County, Idaho
- Carlisle County, Kentucky
- Carlton County, Minnesota
- Caroline County, Maryland
- Caroline County, Virginia
- Carroll County, Arkansas
- Carroll County, Georgia
- Carroll County, Illinois
- Carroll County, Indiana
- Carroll County, Iowa
- Carroll County, Kentucky
- Carroll County, Maryland
- Carroll County, Mississippi
- Carroll County, Missouri
- Carroll County, New Hampshire
- Carroll County, Ohio
- Carroll County, Tennessee
- Carroll County, Virginia
- Carson County, Texas
- Carter County, Kentucky
- Carter County, Missouri
- Carter County, Montana
- Carter County, Oklahoma
- Carter County, Tennessee
- Carteret County, North Carolina
- Carver County, Minnesota
- Cascade County, Montana
- Casey County, Kentucky
- Cass County, Illinois
- Cass County, Indiana
- Cass County, Iowa
- Cass County, Michigan
- Cass County, Minnesota
- Cass County, Missouri
- Cass County, Nebraska
- Cass County, North Dakota
- Cass County, Texas
- Cassia County, Idaho
- Castro County, Texas
- Caswell County, North Carolina
- Catahoula Parish, Louisiana
- Catawba County, North Carolina
- Catoosa County, Georgia
- Catron County, New Mexico
- Cattaraugus County, New York
- Cavalier County, North Dakota
- Cayuga County, New York
- Cecil County, Maryland
- Cedar County, Iowa
- Cedar County, Missouri
- Cedar County, Nebraska
- Centre County, Pennsylvania
- Cerro Gordo County, Iowa
- Chaffee County, Colorado
- Chambers County, Alabama
- Chambers County, Texas
- Champaign County, Illinois
- Champaign County, 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
- Charlotte County, Virginia
- Charlton County, Georgia
- Chase County, Kansas
- Chase County, Nebraska
- Chatham County, Georgia
- Chatham County, North Carolina
- Chattahoochee County, Georgia
- Chattooga County, Georgia
- Chautauqua County, Kansas
- Chautauqua County, 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
- Cherokee County, Georgia
- Cherokee County, Iowa
- Cherokee County, Kansas
- Cherokee County, North Carolina
- Cherokee County, Oklahoma
- Cherokee County, South Carolina
- Cherokee County, Texas
- Cherry County, Nebraska
- Cheshire County, New Hampshire
- Chester County, Pennsylvania
- Chester County, South Carolina
- Chester County, Tennessee
- Chesterfield County, South Carolina
- Chesterfield County, Virginia
- Cheyenne County, Colorado
- Cheyenne County, Kansas
- Cheyenne County, Nebraska
- Chickasaw County, Iowa
- Chickasaw County, Mississippi
- Chicot County, Arkansas
- Childress County, Texas
- Chilton County, Alabama
- Chippewa County, Michigan
- Chippewa County, Minnesota
- Chippewa County, Wisconsin
- Chisago County, Minnesota
- Chittenden County, Vermont
- Choctaw County, Alabama
- Choctaw County, Mississippi
- Choctaw County, Oklahoma
- Chouteau County, Montana
- Chowan County, North Carolina
- Christian County, Illinois
- Christian County, Kentucky
- Christian County, Missouri
- Churchill County, Nevada
- Cibola County, New Mexico
- Cimarron County, Oklahoma
- Citrus County, Florida
- Clackamas County, Oregon
- Claiborne County, Mississippi
- Claiborne County, Tennessee
- Claiborne Parish, Louisiana
- Clallam County, Washington
- Clare County, Michigan
- Clarendon County, South Carolina
- Clarion County, Pennsylvania
- Clark County, Arkansas
- Clark County, Idaho
- Clark County, Illinois
- Clark County, Indiana
- Clark County, Kansas
- Clark County, Kentucky
- Clark County, Missouri
- Clark County, Nevada
- Clark County, Ohio
- Clark County, South Dakota
- Clark County, Washington
- Clark County, Wisconsin
- Clarke County, Alabama
- Clarke County, Georgia
- Clarke County, Iowa
- Clarke County, Mississippi
- Clarke County, Virginia
- Clatsop County, Oregon
- Clay County, Alabama
- Clay County, Arkansas
- Clay County, Florida
- Clay County, Georgia
- Clay County, Illinois
- Clay County, Indiana
- Clay County, Iowa
- Clay County, Kansas
- Clay County, Kentucky
- Clay County, Minnesota
- Clay County, Mississippi
- Clay County, Missouri
- Clay County, Nebraska
- Clay County, North Carolina
- Clay County, South Dakota
- Clay County, Tennessee
- Clay County, Texas
- Clay County, West Virginia
- Clayton County, Georgia
- Clayton County, Iowa
- Clear Creek County, Colorado
- Clearfield County, Pennsylvania
- Clearwater County, Idaho
- Clearwater County, Minnesota
- Cleburne County, Alabama
- Cleburne County, Arkansas
- Clermont County, Ohio
- Cleveland County, Arkansas
- Cleveland County, North Carolina
- Cleveland County, Oklahoma
- Clinch County, Georgia
- Clinton County, Illinois
- Clinton County, Indiana
- Clinton County, Iowa
- Clinton County, Kentucky
- Clinton County, Michigan
- Clinton County, Missouri
- Clinton County, New York
- Clinton County, Ohio
- Clinton County, Pennsylvania
- Cloud County, Kansas
- Coahoma County, Mississippi
- Coal County, Oklahoma
- Cobb County, Georgia
- Cochise County, Arizona
- Cochran County, Texas
- Cocke County, Tennessee
- Coconino County, Arizona
- Codington County, South Dakota
- Coffee County, Alabama
- Coffee County, Georgia
- Coffee County, Tennessee
- Coffey County, Kansas
- Coke County, Texas
- Colbert County, Alabama
- Cole County, Missouri
- Coleman County, Texas
- Coles County, Illinois
- Colfax County, Nebraska
- Colfax County, New Mexico
- Colleton County, South Carolina
- Collier County, Florida
- Collin County, Texas
- Collingsworth County, Texas
- Colorado County, Texas
- Colquitt County, Georgia
- Columbia County, Arkansas
- Columbia County, Florida
- Columbia County, Georgia
- Columbia County, New York
- Columbia County, Oregon
- Columbia County, Pennsylvania
- Columbia County, Washington
- Columbia County, Wisconsin
- Columbiana County, Ohio
- Columbus County, North Carolina
- Colusa County, California
- Comal County, Texas
- Comanche County, Kansas
- Comanche County, Oklahoma
- Comanche County, Texas
- 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
- Cook County, Illinois
- Cook County, Minnesota
- Cooke County, Texas
- Cooper County, Missouri
- Coos County, New Hampshire
- Coos County, Oregon
- Coosa County, Alabama
- Copiah County, Mississippi
- 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
- Covington County, Mississippi
- Coweta County, Georgia
- Cowley County, Kansas
- Cowlitz County, Washington
- Craig County, Oklahoma
- Craig County, Virginia
- Craighead County, Arkansas
- Crane County, Texas
- Craven County, North Carolina
- Crawford County, Arkansas
- Crawford County, Georgia
- Crawford County, Illinois
- Crawford County, Indiana
- Crawford County, Iowa
- Crawford County, Kansas
- Crawford County, Michigan
- Crawford County, Missouri
- Crawford County, Ohio
- Crawford County, Pennsylvania
- Crawford County, Wisconsin
- Creek County, Oklahoma
- Crenshaw County, Alabama
- Crisp County, Georgia
- Crittenden County, Arkansas
- Crittenden County, Kentucky
- Crockett County, Tennessee
- Crockett County, Texas
- Crook County, Oregon
- Crook County, Wyoming
- Crosby County, Texas
- Cross County, Arkansas
- Crow Wing County, Minnesota
- Crowley County, Colorado
- Culberson County, Texas
- Cullman County, Alabama
- Culpeper County, Virginia
- Cumberland County, Illinois
- Cumberland County, Kentucky
- Cumberland County, Maine
- Cumberland County, New Jersey
- Cumberland County, North Carolina
- Cumberland County, Pennsylvania
- Cumberland County, Tennessee
- Cumberland County, Virginia
- Cuming County, Nebraska
- Currituck County, North Carolina
- Curry County, New Mexico
- Curry County, Oregon
- Custer County, Colorado
- Custer County, Idaho
- Custer County, Montana
- Custer County, Nebraska
- Custer County, Oklahoma
- Custer County, South Dakota
- Cuyahoga County, Ohio
D
- Dade County, Georgia
- Dade County, Missouri
- Daggett County, Utah
- Dakota County, Minnesota
- Dakota County, Nebraska
- Dale County, Alabama
- Dallam County, Texas
- Dallas County, Alabama
- Dallas County, Arkansas
- Dallas County, Iowa
- Dallas County, Missouri
- Dallas County, 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
- Davidson County, Tennessee
- Davie County, North Carolina
- Daviess County, Indiana
- Daviess County, Kentucky
- Daviess County, Missouri
- Davis County, Iowa
- Davis County, Utah
- Davison County, South Dakota
- Dawes County, Nebraska
- Dawson County, Georgia
- Dawson County, Montana
- Dawson County, Nebraska
- Dawson County, Texas
- Day County, South Dakota
- De Kalb County, Georgia
- De Kalb County, Indiana
- DeKalb County, Alabama
- DeKalb County, Illinois
- DeKalb County, Missouri
- DeKalb County, Tennessee
- De Soto County, Mississippi
- De Soto Parish, Louisiana
- DeSoto County, Florida
- De Witt County, Illinois
- DeWitt County, Texas
- DeBaca County, New Mexico
- Deaf Smith County, Texas
- Dearborn County, Indiana
- Decatur County, Georgia
- Decatur County, Indiana
- Decatur County, Iowa
- Decatur County, Kansas
- Decatur County, Tennessee
- Deer Lodge County, Montana
- Defiance County, Ohio
- Del Norte County, California
- Delaware County, Indiana
- Delaware County, Iowa
- Delaware County, New York
- Delaware County, Ohio
- Delaware County, Oklahoma
- Delaware County, Pennsylvania
- Delta County, Colorado
- Delta County, Michigan
- Delta County, Texas
- Dent County, Missouri
- Denton County, Texas
- Denver County, Colorado
- Des Moines County, Iowa
- Deschutes County, Oregon
- Desha County, Arkansas
- Deuel County, Nebraska
- Deuel County, South Dakota
- Dewey County, Oklahoma
- Dewey County, South Dakota
- Dickens County, Texas
- Dickenson County, Virginia
- Dickey County, North Dakota
- Dickinson County, Iowa
- Dickinson County, Kansas
- Dickinson County, Michigan
- Dickson County, Tennessee
- Dillingham Census Area, Alaska
- Dillon County, South Carolina
- Dimmit County, Texas
- Dinwiddie County, Virginia
- Divide County, North Dakota
- Dixie County, Florida
- Dixon County, Nebraska
- Doddridge County, West Virginia
- Dodge County, Georgia
- Dodge County, Minnesota
- Dodge County, Nebraska
- Dodge County, Wisconsin
- Dolores County, Colorado
- Doña Ana County, New Mexico
- Doniphan County, Kansas
- Donley County, Texas
- Dooly County, Georgia
- Door County, Wisconsin
- Dorchester County, Maryland
- Dorchester County, South Carolina
- Dougherty County, Georgia
- Douglas County, Colorado
- Douglas County, Georgia
- Douglas County, Illinois
- Douglas County, Kansas
- Douglas County, Minnesota
- Douglas County, Missouri
- Douglas County, Nebraska
- Douglas County, Nevada
- Douglas County, Oregon
- Douglas County, South Dakota
- Douglas County, Washington
- Douglas County, Wisconsin
- Drew County, Arkansas
- Du Page County, Illinois
- Dubois County, Indiana
- Dubuque County, Iowa
- Duchesne County, Utah
- Dukes County, Massachusetts
- Dundy County, Nebraska
- Dunklin County, Missouri
- Dunn County, North Dakota
- Dunn County, Wisconsin
- Duplin County, North Carolina
- Durham County, North Carolina
- Dutchess County, New York
- Duval County, Florida
- Duval County, Texas
- Dyer County, Tennessee
See Also
- List of U.S. county name etymologies for links to the remainder of the list.