Wyoming Citizen Population By County in 2021 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2021, the citizen population for Wyoming was 564,785 and represented 97.94% of the total Wyoming population.

Among all Wyoming counties, Laramie had the highest citizen population (98.32K), followed by Natrona (78.54K), and Campbell (45.99K).

In terms of percentages, Niobrara had the highest percentage of its population being citizens (100.00%), followed by Washakie (99.87%), and Hot Springs (99.68%).

The chart and table below shows the citizen population of each county and the percentage of each county's population that were citizens.

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

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Wyoming Citizen Population By County in 2021
Wyoming Citizen Population By County in 2021
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County Citizen Population % of County Population
Laramie 98320 98.41
Natrona 78540 98.94
Campbell 45985 98.34
Sweetwater 40920 96.37
Fremont 39185 99.37
Albany 35470 95.07
Sheridan 30515 99.04
Park 29370 99.01
Teton 21420 91.85
Uinta 20050 97.73
Lincoln 19075 98.05
Carbon 14235 96.74
Converse 13465 98.29
Goshen 12485 98.77
Big Horn 11465 98.24
Sublette 8610 97.51
Platte 8515 98.95
Johnson 8370 99.00
Washakie 7760 99.87
Crook 7075 98.47
Weston 6805 98.77
Hot Springs 4660 99.68
Niobrara 2485 100.00