Ranking of North Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 155.74K people in North Dakota with Unclassified ancestry (20.14% of North Dakota population). Among all North Dakota counties, McLean County had the highest percentage of its population with Unclassified ancestry (42.80%), followed by Williams County (33.35%), and Wells County (32.57%).

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

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

Data Source: US Census Bureau.
Ranking of North Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021
McLean County
Williams County
Wells County
Dunn County
McKenzie County
Sheridan County
Mountrail County
Steele County
Griggs County
Pembina County
Ranking of North Dakota Counties By Percentage of Population with Unclassified Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 McLean County 42.80
2 Williams County 33.35
3 Wells County 32.57
4 Dunn County 31.25
5 McKenzie County 30.95
6 Sheridan County 29.07
7 Mountrail County 28.81
8 Steele County 27.54
9 Griggs County 27.16
10 Pembina County 24.45
11 Foster County 24.15
12 Renville County 23.93
13 McHenry County 23.65
14 Mercer County 23.51
15 Ward County 23.48
16 Traill County 23.44
17 Burke County 23.06
18 Barnes County 21.82
19 Billings County 21.81
20 Slope County 21.68
21 Walsh County 21.51
22 Golden Valley County 21.41
23 Dickey County 21.25
24 Pierce County 21.17
25 Cavalier County 20.83
26 Hettinger County 20.42
27 Grand Forks County 19.92
28 Stark County 19.90
29 Richland County 19.86
30 Stutsman County 19.71
31 Ransom County 19.32
32 Bottineau County 18.91
33 LaMoure County 18.64
34 Burleigh County 18.52
35 Oliver County 18.32
36 Bowman County 18.22
37 Sargent County 17.35
38 Emmons County 17.28
39 Ramsey County 16.68
40 Cass County 16.40
41 McIntosh County 16.28
42 Divide County 15.85
43 Grant County 15.53
44 Logan County 15.49
45 Towner County 15.43
46 Nelson County 15.26
47 Eddy County 15.06
48 Kidder County 14.48
49 Morton County 14.12
50 Adams County 13.63
51 Rolette County 10.97
52 Sioux County 9.39
53 Benson County 5.67