Iowa White Alone Population By County in 2020

Updated on January 30, 2024.

Based on the US Census Vintage data estimates, in 2020, the White Alone population in Iowa was 2,882,032 and represented 90.33% of the total Iowa population (3,190,571).

Among Iowa counties, Polk County had the highest number of people who identified as White Alone (416,482), followed by Linn County (201,919), and Scott County (148,767). Adams County had the lowest (3,577).

In the map below, we show the number and percentage of each county's White Alone population, as well as the gender percentages when you interact with the map. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and also by state for the United States.

You can also see similar information for other racial and ethnicity groups in Iowa.

See this for other years:
Iowa White Alone Population By County in 2020
Iowa White Alone Population By County in 2020
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County White Alone Population % of County Population
Adair 7275 97.08
Adams 3577 96.42
Allamakee 13478 95.81
Appanoose 11820 96.22
Audubon 5533 97.4
Benton 24800 97.13
Black Hawk 110209 84.11
Boone 25759 96.48
Bremer 23982 95.92
Buchanan 20058 97.34
Buena Vista 16887 81.15
Butler 13959 97.4
Calhoun 9452 95.65
Carroll 20019 96.61
Cass 12721 96.97
Cedar 17918 96.9
Cerro Gordo 40494 94.12
Cherokee 11273 96.66
Chickasaw 11716 97.72
Clarke 9239 94.99
Clay 15772 96.55
Clayton 16585 97.39
Clinton 43365 93.4
Crawford 14994 90.93
Dallas 90215 89.79
Davis 8932 98.03
Decatur 7204 94.73
Delaware 17063 97.75
Des Moines 34440 88.73
Dickinson 17177 96.69
Dubuque 91471 92.12
Emmet 8808 94.36
Fayette 18605 95.68
Floyd 14628 93.83
Franklin 9575 95.78
Fremont 6346 96.64
Greene 8468 96.76
Grundy 11995 97.25
Guthrie 10316 97.2
Hamilton 14107 94
Hancock 10443 97.08
Hardin 16123 95.86
Harrison 14199 97.49
Henry 18830 92.07
Howard 9231 97.25
Humboldt 9264 96.55
Ida 6819 97.15
Iowa 16175 97.12
Jackson 18745 96.37
Jasper 35992 95.19
Jefferson 13644 86.94
Johnson 126187 82.45
Jones 19715 95.46
Keokuk 9772 97.6
Kossuth 14299 96.65
Lee 31460 93.85
Linn 201919 87.63
Louisa 10022 92.62
Lucas 8401 97.46
Lyon 11598 97.24
Madison 16086 96.74
Mahaska 20932 94.51
Marion 32054 95.95
Marshall 36525 91.1
Mills 13960 96.95
Mitchell 10367 97.91
Monona 8398 96.02
Monroe 7372 97.04
Montgomery 10003 96.83
Muscatine 40222 93.23
O'Brien 13627 96.28
Osceola 5956 96.03
Page 14300 94.1
Palo Alto 8474 94.27
Plymouth 24396 94.97
Pocahontas 6782 95.97
Polk 416482 84.48
Pottawattamie 88099 94.05
Poweshiek 17565 94.29
Ringgold 4504 97.03
Sac 9528 97.28
Scott 148767 85.21
Shelby 11312 96.49
Sioux 34741 96.81
Story 85539 86.71
Tama 14814 86.75
Taylor 5690 97.02
Union 11680 96.27
Van Buren 7059 97.81
Wapello 31867 90.2
Warren 50652 96.32
Washington 21676 96.17
Wayne 6322 97.2
Webster 33739 91.22
Winnebago 10169 95.38
Winneshiek 19454 97.09
Woodbury 90209 85.18
Worth 7201 96.85
Wright 12436 96.29