Iowa White Alone Population By County in 2021

Updated on July 31, 2024.

Based on the US Census Vintage data estimates, in 2021, the White Alone population in Iowa was 2,881,064 and represented 90.09% of the total Iowa population (3,197,944).

Among Iowa counties, Polk County had the highest number of people who identified as White Alone (418,833), followed by Linn County (200,509), and Scott County (148,089). Adams County had the lowest (3,524).

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 2021
Iowa White Alone Population By County in 2021
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County White Alone Population % of County Population
Adair 7299 97.01
Adams 3524 96.87
Allamakee 13376 95.76
Appanoose 11799 96.17
Audubon 5484 97.15
Benton 24979 97.05
Black Hawk 109396 83.78
Boone 25785 96.35
Bremer 24052 95.76
Buchanan 20128 97.22
Buena Vista 16751 80.57
Butler 13945 97.19
Calhoun 9431 95.31
Carroll 20077 96.8
Cass 12621 96.42
Cedar 17816 96.64
Cerro Gordo 40201 94.01
Cherokee 11113 96.34
Chickasaw 11611 97.71
Clarke 9244 94.75
Clay 15842 96.28
Clayton 16580 97.23
Clinton 43318 93.19
Crawford 14733 90.77
Dallas 92830 89.11
Davis 8961 97.93
Decatur 7254 94.6
Delaware 17134 97.61
Des Moines 34283 89.03
Dickinson 17271 96.66
Dubuque 90985 92.04
Emmet 8800 94.28
Fayette 18425 95.49
Floyd 14526 93.93
Franklin 9498 95.44
Fremont 6357 96.57
Greene 8432 96.65
Grundy 12076 97.72
Guthrie 10286 97.15
Hamilton 13913 93.61
Hancock 10365 97.05
Hardin 15975 95.65
Harrison 14300 97.35
Henry 18777 92.13
Howard 9189 96.77
Humboldt 9306 96.64
Ida 6762 97.03
Iowa 16129 97.25
Jackson 18681 96.3
Jasper 36006 95.07
Jefferson 13797 87.43
Johnson 127694 82.37
Jones 19841 95.27
Keokuk 9629 97.24
Kossuth 14012 96.54
Lee 31143 93.64
Linn 200509 87.39
Louisa 9956 92.84
Lucas 8468 97.27
Lyon 11687 97.07
Madison 16241 96.71
Mahaska 20796 94.64
Marion 32098 95.98
Marshall 36118 90.49
Mills 13982 96.65
Mitchell 10330 97.79
Monona 8221 95.62
Monroe 7344 96.87
Montgomery 9997 96.91
Muscatine 39767 93.19
O'Brien 13458 95.83
Osceola 5895 95.54
Page 14266 93.73
Palo Alto 8511 95.38
Plymouth 24306 94.46
Pocahontas 6718 95.44
Polk 418833 84.13
Pottawattamie 87685 93.87
Poweshiek 17554 94.26
Ringgold 4492 96.98
Sac 9486 97.11
Scott 148089 85
Shelby 11343 96.29
Sioux 34744 96.62
Story 86490 86.77
Tama 14696 86.97
Taylor 5707 97.29
Union 11582 96.12
Van Buren 7087 97.64
Wapello 31406 88.98
Warren 51371 96.05
Washington 21659 96.17
Wayne 6347 97.18
Webster 33660 90.56
Winnebago 10153 95.24
Winneshiek 19315 96.89
Woodbury 89589 84.72
Worth 7125 96.58
Wright 12241 95.54