Ranking of Iowa Counties By White Alone Population Aged 25 years and above with an Educational attainment of Some College or Associates Degree in 2021 (ACS-5Yrs)

Updated on September 5, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the Iowa White Alone population (aged 25 years and above) who had an educational attainment of Some College or Associates Degree was 633,534. Among all Iowa counties, Polk County had the highest White Alone population (aged 25 years and above) with an educational attainment of Some College or Associates Degree (83,354), followed by Linn County (48,647), and Scott County (33,500).

The chart below shows the top 10 Iowa counties, and the table below shows the ranking of all Iowa counties.

You can see similar information for other educational attainments, and for other races and ethnicities.

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

Ranking of Iowa Counties By White Alone Population (Aged 25yrs+) with an Educational Attainment of Some College or Associates Degree in 2021
Polk County
Linn County
Scott County
Black Hawk County
Pottawattamie County
Johnson County
Woodbury County
Dubuque County
Dallas County
Story County
Ranking of Iowa Counties By White Alone Population (Aged 25yrs+) with an Educational Attainment of Some College or Associates Degree in 2021
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Rank County Number of People
1 Polk County 83354
2 Linn County 48647
3 Scott County 33500
4 Black Hawk County 23666
5 Pottawattamie County 20621
6 Johnson County 19804
7 Woodbury County 19060
8 Dubuque County 17855
9 Dallas County 15197
10 Story County 13952
11 Warren County 11107
12 Cerro Gordo County 10415
13 Clinton County 10188
14 Des Moines County 9573
15 Jasper County 8936
16 Webster County 8410
17 Lee County 8352
18 Muscatine County 8347
19 Marshall County 7246
20 Wapello County 7025
21 Boone County 6717
22 Sioux County 6518
23 Marion County 6269
24 Benton County 6190
25 Plymouth County 5759
26 Carroll County 5125
27 Bremer County 5088
28 Jones County 4999
29 Buchanan County 4995
30 Dickinson County 4712
31 Washington County 4558
32 Cedar County 4522
33 Henry County 4509
34 Mahaska County 4495
35 Hardin County 4358
36 Jackson County 4339
37 Fayette County 4239
38 Madison County 4211
39 Clay County 4131
40 Winneshiek County 4084
41 Kossuth County 4020
42 Iowa County 3895
43 Page County 3800
44 Butler County 3799
45 Hamilton County 3635
46 Clayton County 3585
47 Delaware County 3563
48 Tama County 3499
49 Floyd County 3470
50 Mills County 3466
51 Harrison County 3335
52 Cass County 3148
53 Appanoose County 3063
54 Allamakee County 3054
55 Grundy County 3041
56 Poweshiek County 3011
57 O'Brien County 3007
58 Wright County 2986
59 Jefferson County 2959
60 Buena Vista County 2906
61 Shelby County 2871
62 Union County 2869
63 Crawford County 2863
64 Guthrie County 2821
65 Montgomery County 2661
66 Sac County 2644
67 Winnebago County 2625
68 Mitchell County 2583
69 Hancock County 2577
70 Lyon County 2549
71 Franklin County 2444
72 Humboldt County 2434
73 Cherokee County 2432
74 Chickasaw County 2418
75 Palo Alto County 2403
76 Emmet County 2393
77 Calhoun County 2349
78 Monona County 2307
79 Keokuk County 2295
80 Louisa County 2200
81 Greene County 2082
82 Howard County 2079
83 Lucas County 2061
84 Worth County 1950
85 Adair County 1806
86 Fremont County 1802
87 Pocahontas County 1730
88 Davis County 1709
89 Clarke County 1676
90 Monroe County 1660
91 Van Buren County 1646
92 Ida County 1551
93 Taylor County 1418
94 Osceola County 1380
95 Audubon County 1375
96 Wayne County 1352
97 Decatur County 1186
98 Ringgold County 1062
99 Adams County 956