Counties in Iowa

99 counties · Population, income, elections, and more

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99 counties

CountyPopulation
Polk County497,441
Linn County229,463
Scott County174,302
Johnson County154,881
Black Hawk County130,693
Woodbury County105,760
Dallas County104,136
Dubuque County98,948
Story County98,592
Pottawattamie County93,407
Warren County53,484
Clinton County46,383
Cerro Gordo County42,785
Muscatine County42,735
Marshall County39,971
Des Moines County38,597
Jasper County37,864
Webster County36,848
Sioux County35,984
Wapello County35,265
Marion County33,551
Lee County33,175
Boone County26,669
Plymouth County25,699
Benton County25,698
Bremer County25,118
Washington County22,539
Mahaska County22,045
Jones County20,799
Buena Vista County20,684
Carroll County20,677
Buchanan County20,645
Henry County20,228
Winneshiek County19,972
Jackson County19,429
Fayette County19,393
Poweshiek County18,582
Cedar County18,427
Dickinson County17,844
Delaware County17,549
Clayton County17,069
Tama County16,982
Madison County16,760
Hardin County16,729
Iowa County16,547
Clay County16,446
Crawford County16,289
Jefferson County15,676
Floyd County15,502
Page County15,168
Hamilton County14,893
Harrison County14,645
Kossuth County14,610
Mills County14,563
Butler County14,301
O'Brien County14,103
Allamakee County14,038
Cass County13,115
Wright County12,817
Grundy County12,352
Appanoose County12,242
Lyon County12,087
Union County12,038
Chickasaw County11,868
Shelby County11,757
Cherokee County11,587
Hancock County10,718
Louisa County10,710
Winnebago County10,648
Guthrie County10,646
Mitchell County10,548
Montgomery County10,254
Franklin County9,977
Keokuk County9,964
Calhoun County9,858
Sac County9,759
Clarke County9,690
Humboldt County9,573
Howard County9,459
Emmet County9,316
Davis County9,127
Palo Alto County8,902
Greene County8,722
Lucas County8,685
Monona County8,619
Decatur County7,669
Monroe County7,546
Adair County7,471
Worth County7,380
Van Buren County7,236
Pocahontas County7,040
Ida County6,944
Fremont County6,570
Wayne County6,518
Osceola County6,114
Taylor County5,901
Audubon County5,622
Ringgold County4,664
Adams County3,641