Ranking of Wisconsin Counties By Population Aged 25 years and above with an Educational attainment of Less than High School Diploma in 2021 (ACS-5Yrs)

Updated on September 3, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the population of Wisconsin (aged 25 years and above) who had an educational attainment of Less than High School Diploma was 285,275. Among all Wisconsin counties, Milwaukee County had the highest population (aged 25 years and above) with an educational attainment of Less than High School Diploma (67,517), followed by Dane County (14,439), and Brown County (13,669).

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

You can see similar information for other educational attainments.

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

Ranking of Wisconsin Counties By Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
Milwaukee County
Dane County
Brown County
Racine County
Waukesha County
Kenosha County
Rock County
Winnebago County
Outagamie County
Marathon County
Ranking of Wisconsin Counties By Population (Aged 25yrs+) with an Educational Attainment of Less than High School Diploma in 2021
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Rank County Number of People
1 Milwaukee County 67517
2 Dane County 14439
3 Brown County 13669
4 Racine County 11194
5 Waukesha County 10328
6 Kenosha County 9879
7 Rock County 8897
8 Winnebago County 7388
9 Outagamie County 7344
10 Marathon County 6835
11 Walworth County 5927
12 Fond du Lac County 5647
13 Dodge County 5175
14 Sheboygan County 4960
15 Washington County 4810
16 Jefferson County 4457
17 Manitowoc County 4301
18 Sauk County 3757
19 Clark County 3700
20 Wood County 3515
21 Chippewa County 3401
22 La Crosse County 3373
23 Barron County 3133
24 Eau Claire County 2997
25 Monroe County 2881
26 Marinette County 2663
27 Waupaca County 2626
28 Columbia County 2499
29 Grant County 2497
30 Portage County 2377
31 St. Croix County 2318
32 Oconto County 2228
33 Shawano County 2197
34 Waushara County 2048
35 Polk County 2004
36 Adams County 1997
37 Vernon County 1971
38 Green County 1889
39 Juneau County 1888
40 Calumet County 1876
41 Douglas County 1819
42 Trempealeau County 1712
43 Ozaukee County 1678
44 Dunn County 1665
45 Lincoln County 1561
46 Taylor County 1534
47 Oneida County 1529
48 Langlade County 1417
49 Jackson County 1411
50 Pierce County 1302
51 Green Lake County 1256
52 Rusk County 1106
53 Richland County 1083
54 Door County 1040
55 Marquette County 981
56 Lafayette County 960
57 Burnett County 922
58 Crawford County 900
59 Washburn County 894
60 Kewaunee County 888
61 Sawyer County 875
62 Vilas County 870
63 Buffalo County 820
64 Price County 804
65 Iowa County 696
66 Ashland County 685
67 Forest County 665
68 Bayfield County 563
69 Pepin County 404
70 Florence County 298
71 Iron County 208
72 Menominee County 127