Iowa Natural Population Increase By County in 2012

Updated on June 30, 2022.

According to the US Census Bureau estimates, in 2012, the natural population increase for Iowa was 10,405, and the top three counties that had the highest natural population increase were:

  1. Iowa: 10,405
  2. Polk: 3,563
  3. Johnson: 1,161

On the other hand, the top 3 counties that had the lowest natural population increase were:

  1. Monona: -62
  2. Poweshiek: -55
  3. Cass: -50

Use the interactive visualization and the table below to explore the natural population increase for each Iowa county in 2012.

Natural Population Increase refers to the number of births minuse the number of deaths.

See this for other years:
Iowa Natural Population Increase By County in 2012
Iowa Natural Population Increase By County in 2012
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County Natural Pop. Increase
Adair -26
Adams -1
Allamakee 6
Appanoose 3
Audubon -41
Benton 55
Black Hawk 490
Boone 16
Bremer 66
Buchanan 97
Buena Vista 154
Butler -1
Calhoun -10
Carroll 28
Cass -50
Cedar 9
Cerro Gordo -16
Cherokee -36
Chickasaw 25
Clarke -2
Clay -15
Clayton 23
Clinton 41
Crawford 120
Dallas 757
Davis 52
Decatur 0
Delaware 29
Des Moines 7
Dickinson -5
Dubuque 298
Emmet -15
Fayette -26
Floyd 1
Franklin -13
Fremont -30
Greene -42
Grundy 13
Guthrie 0
Hamilton 1
Hancock -27
Hardin -41
Harrison -30
Henry 13
Howard 12
Humboldt -16
Ida -14
Iowa 10405
Jackson -35
Jasper 78
Jefferson 5
Johnson 1161
Jones -18
Keokuk 38
Kossuth -10
Lee -22
Linn 1123
Louisa 40
Lucas -27
Lyon 30
Madison 45
Mahaska 11
Marion 9
Marshall 93
Mills -7
Mitchell -20
Monona -62
Monroe -5
Montgomery -23
Muscatine 127
O'Brien -35
Osceola 5
Page -38
Palo Alto -36
Plymouth 22
Pocahontas -1
Polk 3563
Pottawattamie 340
Poweshiek -55
Ringgold -23
Sac -26
Scott 814
Shelby -6
Sioux 245
Story 465
Tama 24
Taylor 11
Union -30
Van Buren 2
Wapello 7
Warren 149
Washington 40
Wayne -22
Webster -38
Winnebago -4
Winneshiek 1
Woodbury 618
Worth -11
Wright 11