Ranking of Wyoming Counties By Percentage of Population with Irish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 66.76K people in Wyoming with Irish ancestry (11.58% of Wyoming population). Among all Wyoming counties, Niobrara County had the highest percentage of its population with Irish ancestry (16.05%), followed by Hot Springs County (15.39%), and Teton County (15.35%).

The chart and table below shows the top 10 counties with high percentage of its population having Irish 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 Irish Ancestry in 2021
Niobrara County
Hot Springs County
Teton County
Carbon County
Natrona County
Goshen County
Laramie County
Albany County
Uinta County
Weston County
Ranking of Wyoming Counties By Percentage of Population with Irish Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Niobrara County 16.05
2 Hot Springs County 15.39
3 Teton County 15.35
4 Carbon County 14.10
5 Natrona County 13.42
6 Goshen County 13.38
7 Laramie County 12.94
8 Albany County 12.79
9 Uinta County 12.52
10 Weston County 12.51
11 Sublette County 12.27
12 Crook County 12.01
13 Converse County 11.98
14 Fremont County 11.33
15 Park County 10.24
16 Campbell County 10.18
17 Big Horn County 10.11
18 Lincoln County 8.84
19 Washakie County 8.41
20 Platte County 8.26
21 Sheridan County 7.95
22 Sweetwater County 7.92
23 Johnson County 6.82