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

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, the total population of Wyoming was 576.64K. Among all Wyoming counties, Laramie was the most populated county (99.91K), followed by Natrona (79.38K), and then Campbell (46.76K).

On the other hand, the least populated counties were: Niobrara (2.49K), Hot Springs (4.67K), and Weston (6.89K).

The chart and table below shows the population of each county and the percentage of Wyoming population in each county.

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

Related Topics: Wyoming ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census - ACS 5-Year Estimates, 2021 Census.

Wyoming Population By County in 2021

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County	Population	% of State Population
Albany	37311	6.47
Big Horn	11671	2.02
Campbell	46758	8.11
Carbon	14714	2.55
Converse	13702	2.38
Crook	7185	1.25
Fremont	39434	6.84
Goshen	12642	2.19
Hot Springs	4673	0.81
Johnson	8457	1.47
Laramie	99905	17.33
Lincoln	19457	3.37
Natrona	79382	13.77
Niobrara	2486	0.43
Park	29664	5.14
Platte	8607	1.49
Sheridan	30812	5.34
Sublette	8830	1.53
Sweetwater	42459	7.36
Teton	23319	4.04
Uinta	20514	3.56
Washakie	7768	1.35
Weston	6891	1.20