Ranking of Wyoming 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 140.11K people in Wyoming with Unclassified ancestry (24.30% of Wyoming population). Among all Wyoming counties, Sheridan County had the highest percentage of its population with Unclassified ancestry (46.05%), followed by Johnson County (37.53%), and Campbell County (35.17%).

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 Wyoming.

Data Source: US Census Bureau.
Ranking of Wyoming Counties By Percentage of Population with Unclassified Ancestry in 2021
Sheridan County
Johnson County
Campbell County
Crook County
Weston County
Sweetwater County
Niobrara County
Laramie County
Converse County
Lincoln County
Ranking of Wyoming Counties By Percentage of Population with Unclassified Ancestry in 2021
0 of 0
Rank County Percentage of Pop. (%)
1 Sheridan County 46.05
2 Johnson County 37.53
3 Campbell County 35.17
4 Crook County 31.25
5 Weston County 29.10
6 Sweetwater County 28.17
7 Niobrara County 28.00
8 Laramie County 24.11
9 Converse County 23.48
10 Lincoln County 23.07
11 Platte County 21.26
12 Albany County 21.16
13 Big Horn County 20.89
14 Carbon County 20.06
15 Hot Springs County 19.45
16 Goshen County 19.32
17 Fremont County 19.00
18 Park County 18.83
19 Natrona County 18.81
20 Uinta County 18.62
21 Teton County 18.50
21 Washakie County 18.50
22 Sublette County 17.69