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 -2.42%

Adams County -8.07%

Allamakee County -1.88%

Appanoose County -4.42%

Audubon County -7.27%

Benton County -1.92%

Black Hawk County 0.04%

Boone County 1.55%

Bremer County 2.93%

Buchanan County -1.88%

Buena Vista County 2.78%

Butler County -3.59%

Calhoun County 2.66%

Carroll County -0.27%

Cass County -5.94%

Cedar County 0.03%

Cerro Gordo County -2.32%

Cherokee County -3.43%

Chickasaw County -3.43%

Clarke County 4.98%

Clay County -1.7%

Clayton County -5.99%

Clinton County -5.41%

Crawford County -3.34%

Dallas County 50.72%

Davis County 4.08%

Decatur County -9.6%

Delaware County -1.55%

Des Moines County -3.51%

Dickinson County 6.22%

Dubuque County 5.99%

Emmet County -8.87%

Fayette County -6.57%

Floyd County -4.15%

Franklin County -6.19%

Fremont County -11.24%

Greene County -6.05%

Grundy County -1%

Guthrie County -3.02%

Hamilton County -4.05%

Hancock County -4.81%

Hardin County -3.74%

Harrison County -2.32%

Henry County 1.67%

Howard County -1.01%

Humboldt County -2.22%

Ida County -1.18%

Iowa County 1.88%

Jackson County -1.83%

Jasper County 2.64%

Jefferson County -7.01%

Johnson County 16.79%

Jones County 0.04%

Keokuk County -4.55%

Kossuth County -4.6%

Lee County -6.43%

Linn County 9.03%

Louisa County -4.83%

Lucas County -2.97%

Lyon County 3.05%

Madison County 5.54%

Mahaska County -0.85%

Marion County 0.32%

Marshall County -1.34%

Mills County -3.82%

Mitchell County -1.96%

Monona County -5.32%

Monroe County -4.93%

Montgomery County -3.82%

Muscatine County 1.15%

Obrien County -1.5%

Osceola County -4.18%

Page County -4.53%

Palo Alto County -4.51%

Plymouth County 2.85%

Pocahontas County -3.17%

Polk County 14.34%

Pottawattamie County 0.55%

Poweshiek County -1.33%

Ringgold County -9.12%

Sac County -5.18%

Scott County 5.72%

Shelby County -3.46%

Sioux County 6.43%

Story County 10.05%

Tama County -3.56%

Taylor County -6.66%

Union County -3.16%

Van Buren County -4.85%

Wapello County -0.53%

Warren County 13.37%

Washington County 3.97%

Wayne County 1.47%

Webster County -2.67%

Winnebago County -1.72%

Winneshiek County -4.68%

Woodbury County 3.69%

Worth County -2.04%

Wright County -2.16%