Wyoming Citizen Population By County in 2020 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2020, the citizen population for Wyoming was 569,610 and represented 97.98% of the total Wyoming population.

Among all Wyoming counties, Laramie had the highest citizen population (97.73K), followed by Natrona (79.09K), and Campbell (46.34K).

In terms of percentages, Niobrara had the highest percentage of its population being citizens (100.00%), followed by Hot Springs (99.78%), and Fremont (99.66%).

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 Voting-age Population By County in 2020

Data Source: US Census - ACS 5-Year (CVAP).

See this for other years:

Wyoming Citizen Population By County in 2020

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County	Citizen Population	% of County Population
Laramie	97730	98.45
Natrona	79090	98.78
Campbell	46340	98.68
Sweetwater	41915	96.69
Fremont	39575	99.66
Albany	36955	95.58
Sheridan	30110	99.06
Park	28945	98.87
Teton	21345	91.39
Uinta	19935	97.84
Lincoln	19220	97.86
Carbon	14605	96.88
Converse	13610	98.34
Goshen	13170	99.02
Big Horn	11595	98.18
Sublette	9625	97.57
Johnson	8450	99.18
Platte	8440	98.48
Washakie	7835	98.74
Crook	7365	98.20
Weston	6840	98.56
Hot Springs	4540	99.78
Niobrara	2375	100.00