Map of Population Change for Counties in Iowa - 2010 to 2020

Iowa Population Change Map

< -15%

-15% to -5%

-5% to 0%

0% to 5%

5% to 15%

> 15%

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List of Counties in Iowa With Population Percentage Change
Map Key Name Population Change
Adair County -2.4%

Adams County -8.1%

Allamakee County -1.9%

Appanoose County -4.4%

Audubon County -7.3%

Benton County -1.9%

Black Hawk County 0%

Boone County 1.6%

Bremer County 2.9%

Buchanan County -1.9%

Buena Vista County 2.8%

Butler County -3.6%

Calhoun County 2.7%

Carroll County -0.3%

Cass County -5.9%

Cedar County 0%

Cerro Gordo County -2.3%

Cherokee County -3.4%

Chickasaw County -3.4%

Clarke County 5%

Clay County -1.7%

Clayton County -6%

Clinton County -5.4%

Crawford County -3.3%

Dallas County 50.7%

Davis County 4.1%

Decatur County -9.6%

Delaware County -1.6%

Des Moines County -3.5%

Dickinson County 6.2%

Dubuque County 6%

Emmet County -8.9%

Fayette County -6.6%

Floyd County -4.1%

Franklin County -99.8%

Fremont County -11.2%

Greene County -6.1%

Grundy County -1%

Guthrie County -3%

Hamilton County -4%

Hancock County -4.8%

Hardin County -3.7%

Harrison County -2.3%

Henry County 1.7%

Howard County -1%

Humboldt County -2.2%

Ida County -99.9%

Iowa County 1.9%

Jackson County -1.8%

Jasper County 2.6%

Jefferson County -7%

Johnson County 16.8%

Jones County 0%

Keokuk County -99.7%

Kossuth County -4.6%

Lee County -6.4%

Linn County 9%

Louisa County -4.8%

Lucas County -3%

Lyon County 3%

Madison County 5.5%

Mahaska County -0.9%

Marion County 0.3%

Marshall County -1.3%

Mills County -3.8%

Mitchell County -2%

Monona County -5.3%

Monroe County -4.9%

Montgomery County -3.8%

Muscatine County 1.1%

Obrien County -4.69%

Osceola County -4.2%

Page County -4.5%

Palo Alto County -4.5%

Plymouth County 2.8%

Pocahontas County -3.2%

Polk County 14.3%

Pottawattamie County 0.5%

Poweshiek County -1.3%

Ringgold County -9.1%

Sac County -5.2%

Scott County 5.7%

Shelby County -3.5%

Sioux County 6.4%

Story County 10%

Tama County -3.6%

Taylor County -6.7%

Union County -3.2%

Van Buren County -4.8%

Wapello County -0.5%

Warren County 13.4%

Washington County 4%

Wayne County 1.5%

Webster County -2.7%

Winnebago County -1.7%

Winneshiek County -99.7%

Woodbury County 3.7%

Worth County -2%

Wright County -2.2%