Ranking of South Dakota Counties By Percentage of Population with Czech Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 16.96K people in South Dakota with Czech ancestry (1.92% of South Dakota population). Among all South Dakota counties, Bon Homme County had the highest percentage of its population with Czech ancestry (14.23%), followed by Charles Mix County (8.98%), and Gregory County (8.57%).

The chart and table below shows the top 10 counties with high percentage of its population having Czech ancestry.

You can see similar information for other states and for other ancestry groups in South Dakota.

Data Source: US Census Bureau.
Ranking of South Dakota Counties By Percentage of Population with Czech Ancestry in 2021
Bon Homme County
Charles Mix County
Gregory County
Brule County
Tripp County
Yankton County
Hutchinson County
Lyman County
Hyde County
Douglas County
Ranking of South Dakota Counties By Percentage of Population with Czech Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Bon Homme County 14.23
2 Charles Mix County 8.98
3 Gregory County 8.57
4 Brule County 8.27
5 Tripp County 6.45
6 Yankton County 5.61
7 Hutchinson County 4.66
8 Lyman County 4.30
9 Hyde County 3.26
10 Douglas County 2.93
11 Faulk County 2.83
12 Jerauld County 2.76
13 McCook County 2.52
14 Lawrence County 2.51
15 Aurora County 2.45
16 Pennington County 2.29
17 Sully County 2.19
18 Potter County 2.14
19 Davison County 2.13
20 Hughes County 2.03
21 Jones County 1.97
22 Stanley County 1.96
23 Butte County 1.94
24 Hand County 1.86
25 Minnehaha County 1.75
26 Sanborn County 1.73
27 Brookings County 1.67
28 Kingsbury County 1.64
29 Custer County 1.62
29 Marshall County 1.62
30 Clay County 1.48
31 Haakon County 1.45
32 Perkins County 1.34
33 Turner County 1.32
34 Brown County 1.25
35 Deuel County 1.24
36 Meade County 1.21
37 Fall River County 1.12
38 Union County 1.10
39 Edmunds County 1.00
39 Hamlin County 1.00
40 Grant County 0.97
41 Lincoln County 0.95
42 Spink County 0.92
43 Jackson County 0.91
44 Day County 0.89
45 Harding County 0.85
46 Codington County 0.78
47 Hanson County 0.70
48 Bennett County 0.59
49 Walworth County 0.54
50 Beadle County 0.50
51 McPherson County 0.49
51 Roberts County 0.49
52 Buffalo County 0.46
53 Moody County 0.40
54 Lake County 0.36
55 Mellette County 0.31
55 Miner County 0.31
56 Todd County 0.29
57 Clark County 0.24
58 Ziebach County 0.20
59 Dewey County 0.17
60 Corson County 0.10
61 Oglala Lakota County 0.08