Iowa Counties

Iowa, midwestern state in the United States. There are 99 county in Iowa. You can find the list of these counties and detailed information from the links below.

Polk County
Polk County

Polk County, population 494,281

Linn County
Linn County

Linn County, population 227,854

Scott County
Scott County

Scott County, population 173,216

Iowa has 99 counties that showcase the state's landscapes, communities, and agricultural heritage. Here are some of the most significant counties in Iowa:

Polk County - Home to Des Moines, Iowa's capital and largest city, Polk County contains over 490,000 residents. As a major business and cultural hub, Des Moines influences the county's growth and economy.

Linn County - Among Iowa's more urban counties, Linn County houses over 220,000 people in cities like Cedar Rapids. It continues to grow in population and hosts industries like renewable energy and biotechnology.

Scott County - Davenport and Bettendorf anchor this eastern Iowa county of over 175,000 residents. Scott County supports businesses in finance, healthcare, and manufacturing.

Story County - Boone is the county seat here, but Ames and Iowa State University shape Story County's college-town character. It blends urban and rural lifestyles.

Sioux County - Located in northwest Iowa, Sioux County has a strong agricultural tradition. Its largest city, Sioux Center, has just over 7,000 people, reflecting the county's small-town feel.

Plymouth County - Plymouth County taps into its rich prairie setting to support agriculture and tourism. With under 25,000 residents, its pace reflects old-fashioned rural Iowa.

With sweeping farmlands, dense urban centers, and college towns, Iowa's 99 counties highlight facets of life in the Hawkeye State. From rural western counties to evolving eastern border counties, each has its own charm and assets.

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 all
County Name Population Cities
Adair County 7,059 Adair County cities
Adams County 3,588 Adams County cities
Allamakee County 13,642 Allamakee County cities
Appanoose County 12,430 Appanoose County cities
Audubon County 5,481 Audubon County cities
Benton County 25,414 Benton County cities
Black Hawk County 130,786 Black Hawk County cities
Boone County 26,277 Boone County cities
Bremer County 25,311 Bremer County cities
Buchanan County 21,287 Buchanan County cities
Buena Vista County 19,772 Buena Vista County cities
Butler County 14,333 Butler County cities
Calhoun County 9,473 Calhoun County cities
Carroll County 19,914 Carroll County cities
Cass County 12,817 Cass County cities
Cedar County 18,485 Cedar County cities
Cerro Gordo County 42,103 Cerro Gordo County cities
Cherokee County 11,190 Cherokee County cities
Chickasaw County 11,834 Chickasaw County cities
Clarke County 9,353 Clarke County cities
Clay County 15,976 Clay County cities
Clayton County 17,321 Clayton County cities
Clinton County 46,392 Clinton County cities
Crawford County 16,834 Crawford County cities
Dallas County 96,963 Dallas County cities
Davis County 9,051 Davis County cities
Decatur County 7,769 Decatur County cities
Delaware County 16,937 Delaware County cities
Des Moines County 38,708 Des Moines County cities
Dickinson County 17,549 Dickinson County cities
Dubuque County 97,590 Dubuque County cities
Emmet County 9,095 Emmet County cities
Fayette County 19,258 Fayette County cities
Floyd County 15,480 Floyd County cities
Franklin County 9,971 Franklin County cities
Fremont County 6,729 Fremont County cities
Greene County 8,795 Greene County cities
Grundy County 12,217 Grundy County cities
Guthrie County 10,737 Guthrie County cities
Hamilton County 14,716 Hamilton County cities
Hancock County 10,507 Hancock County cities
Hardin County 16,575 Hardin County cities
Harrison County 13,928 Harrison County cities
Henry County 19,697 Henry County cities
Howard County 9,176 Howard County cities
Humboldt County 9,473 Humboldt County cities
Ida County 6,833 Ida County cities
Iowa County 16,138 Iowa County cities
Jackson County 19,205 Jackson County cities
Jasper County 37,148 Jasper County cities
Jefferson County 18,347 Jefferson County cities
Johnson County 153,740 Johnson County cities
Jones County 20,617 Jones County cities
Keokuk County 10,085 Keokuk County cities
Kossuth County 14,680 Kossuth County cities
Lee County 33,480 Lee County cities
Linn County 227,854 Linn County cities
Louisa County 11,011 Louisa County cities
Lucas County 8,518 Lucas County cities
Lyon County 11,756 Lyon County cities
Madison County 16,521 Madison County cities
Mahaska County 22,370 Mahaska County cities
Marion County 33,168 Marion County cities
Marshall County 39,495 Marshall County cities
Mills County 14,766 Mills County cities
Mitchell County 10,647 Mitchell County cities
Monona County 8,598 Monona County cities
Monroe County 7,770 Monroe County cities
Montgomery County 9,935 Montgomery County cities
Muscatine County 42,394 Muscatine County cities
O'Brien County 13,679 O'Brien County cities
Osceola County 5,987 Osceola County cities
Page County 15,073 Page County cities
Palo Alto County 8,845 Palo Alto County cities
Plymouth County 25,219 Plymouth County cities
Pocahontas County 6,607 Pocahontas County cities
Polk County 494,281 Polk County cities
Pottawattamie County 93,328 Pottawattamie County cities
Poweshiek County 18,381 Poweshiek County cities
Ringgold County 4,801 Ringgold County cities
Sac County 9,603 Sac County cities
Scott County 173,216 Scott County cities
Shelby County 11,430 Shelby County cities
Sioux County 35,043 Sioux County cities
Story County 98,237 Story County cities
Tama County 16,801 Tama County cities
Taylor County 6,092 Taylor County cities
Union County 12,157 Union County cities
Van Buren County 7,069 Van Buren County cities
Wapello County 34,985 Wapello County cities
Warren County 52,265 Warren County cities
Washington County 21,992 Washington County cities
Wayne County 6,415 Wayne County cities
Webster County 35,934 Webster County cities
Winnebago County 10,277 Winnebago County cities
Winneshiek County 19,862 Winneshiek County cities
Woodbury County 103,138 Woodbury County cities
Worth County 7,359 Worth County cities
Wright County 12,416 Wright County cities

Counties on Map (99)