Allamakee County is the northeastern-most county located in the U.S. state of Iowa. The population was 14,330 in the 2010 census, a decline from 14,675 in 2000. Its county seat is Waukon.

Johnson County is a county located in the U.S. state of Iowa. The population was 130,882 in the 2010 census, an increase from 111,006 in the 2000 census. The county seat is Iowa City, the home of the University of Iowa.

Howard County is a county located in the US state of Iowa. The population was 9,566 in the 2010 census, a decline from 9,932 in the 2000 census. The county seat is Cresco.

Winneshiek County is a county located in the U.S. state of Iowa. The population was 21,056 in the 2010 census, a decline from 21,310 in the 2000 census. The county seat is Decorah.

Clayton County is a county located in the U.S. state of Iowa. It was established in 1837 and was named in honor of John M. Clayton, United States Senator from Delaware and later Secretary of State under President […]

Fayette County is a county located in the U.S. state of Iowa. The population was 20,880 in the 2010 census, a decline from 22,008 in the 2000 census. The county seat is West Union.

Bremer County is a county located in the U.S. state of Iowa. It was named for Fredrika Bremer, a Swedish traveler, poet, and author. The population was 24,276 in the 2010 census, an increase from 23,325 in 2000.

Iowa County is a county located in the U.S. state of Iowa. The population was 16,355 in the 2010 census, an increase from 15,671 in the 2000 census. The county seat is Marengo.

Muscatine County is a county located in the U.S. state of Iowa. The population was 42,745 in the 2010 census, an increase from 41,722 in the 2000 census. The county seat is Muscatine. The southeastern border is […]

Keokuk County is a county located in the U.S. state of Iowa. The population was 10,511 in the 2010 census, a decline from 11,400 in the 2000 census. The county seat is Sigourney.

Washington County is a county located in the U.S. state of Iowa. The population was 21,704 in the 2010 census, an increase from 20,670 in the 2000 census. It is one of the two counties that make up the Iowa City, […]

Louisa County is a county located in the U.S. state of Iowa. The population was 11,387 in the 2010 census, a decline from 12,183 in the 2000 census. The county seat is Wapello. Louisa County is part of the […]

Des Moines County is a county located in the U.S. state of Iowa. The population was 40,325 in the 2010 census, a decline from 42,351 in the 2000 census. The county seat is Burlington

Henry County is a county located in the U.S. state of Iowa. It was named for General Henry Dodge, governor of Wisconsin Territory. The population was 20,145 in the 2010 census, a decline from 20,336 in the 2000 census.

Jefferson County is a county located in the U.S. state of Iowa. The population was 16,843 in the 2010 census, an increase from 16,181 in the 2000 census. The county seat is Fairfield.

Lee County is a county located in the U.S. state of Iowa. It was established in 1836 and named for a family prominent in the New York Land Company, owners of extensive interests in the Half-Breed Tract in the 1830s.

Van Buren County is a county located in the U.S. state of Iowa. The population was 7,570 in the 2010 census, a decline from 7,809 in the 2000 census.

Davis County is a county located in the U.S. state of Iowa. The population was 8,753 in the 2010 census, an increase from 8,541 in the 2000 census. The county seat is Bloomfield.

Wapello County is a county located in the U.S. state of Iowa. The population was 35,625 in the 2010 census, a decline from 36,051 in the 2000 census. The county seat is Ottumwa.

Chickasaw County is a county located in the U.S. state of Iowa. It was named for the southern Indian Nation whose chief was Bradford. The population was 12,439 in the 2010 census, a decline from 13,095 in 2000. […]