Iowa White Alone Population By County in 2020

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2020, the White Alone population in Iowa was 2,882,548 and represented 90.34% of the total Iowa population (3,190,904).

Among Iowa counties, Polk County had the highest number of people who identified as White Alone (416,656), followed by Linn County (201,902), and Scott County (148,696). Adams County had the lowest (3,607).

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
Items per page:
0 of 0
County White Alone Population % of County Population
Adair 7275 97.09
Adams 3607 97.25
Allamakee 13483 95.82
Appanoose 11826 96.25
Audubon 5534 97.38
Benton 24818 97.14
Black Hawk 110144 84.05
Boone 25756 96.47
Bremer 23983 95.89
Buchanan 20058 97.35
Buena Vista 16925 81.35
Butler 13962 97.41
Calhoun 9469 95.65
Carroll 20045 96.71
Cass 12726 96.98
Cedar 17920 96.89
Cerro Gordo 40504 94.15
Cherokee 11260 96.6
Chickasaw 11718 97.75
Clarke 9254 95.04
Clay 15771 96.54
Clayton 16588 97.39
Clinton 43370 93.42
Crawford 14992 90.95
Dallas 90245 89.76
Davis 8930 98.01
Decatur 7207 94.75
Delaware 17067 97.76
Des Moines 34563 89.03
Dickinson 17180 96.7
Dubuque 91465 92.1
Emmet 8821 94.37
Fayette 18609 95.7
Floyd 14643 93.84
Franklin 9571 95.69
Fremont 6344 96.62
Greene 8466 96.73
Grundy 12043 97.65
Guthrie 10319 97.24
Hamilton 14063 93.7
Hancock 10445 97.13
Hardin 16133 95.87
Harrison 14203 97.49
Henry 18824 92.06
Howard 9203 96.99
Humboldt 9288 96.76
Ida 6827 97.22
Iowa 16183 97.15
Jackson 18752 96.39
Jasper 35994 95.2
Jefferson 13674 87.13
Johnson 126244 82.48
Jones 19720 95.48
Keokuk 9764 97.6
Kossuth 14302 96.64
Lee 31480 93.88
Linn 201902 87.62
Louisa 10019 92.65
Lucas 8403 97.51
Lyon 11610 97.32
Madison 16091 96.77
Mahaska 20951 94.54
Marion 32068 95.97
Marshall 36477 90.97
Mills 13961 96.97
Mitchell 10376 97.92
Monona 8387 95.94
Monroe 7368 97.04
Montgomery 10023 97
Muscatine 40232 93.25
O'Brien 13605 96.15
Osceola 5953 96.05
Page 14297 94.12
Palo Alto 8560 95.26
Plymouth 24399 94.97
Pocahontas 6781 95.98
Polk 416656 84.51
Pottawattamie 88101 94.06
Poweshiek 17577 94.34
Ringgold 4504 97.09
Sac 9534 97.3
Scott 148696 85.16
Shelby 11322 96.48
Sioux 34703 96.71
Story 85534 86.71
Tama 14838 86.87
Taylor 5702 97.27
Union 11679 96.27
Van Buren 7064 97.81
Wapello 31815 90.06
Warren 50651 96.31
Washington 21677 96.16
Wayne 6335 97.28
Webster 33761 91.26
Winnebago 10178 95.46
Winneshiek 19461 97.09
Woodbury 90146 85.11
Worth 7202 96.85
Wright 12389 95.92