Wyoming Citizen Population By County in 2015 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the citizen population for Wyoming was 566,615 and represented 97.75% of the total Wyoming population.

Among all Wyoming counties, Laramie had the highest citizen population (93.82K), followed by Natrona (78.78K), and Campbell (46.90K).

In terms of percentages, Niobrara had the highest percentage of its population being citizens (100.00%), followed by Weston (99.72%), and Johnson (99.71%).

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 2015

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

See this for other years:

Wyoming Citizen Population By County in 2015

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County	Citizen Population	% of County Population
Laramie	93820	98.31
Natrona	78780	98.46
Campbell	46900	97.68
Sweetwater	42935	95.90
Fremont	40455	99.26
Albany	36075	96.03
Sheridan	29460	99.06
Park	28370	97.88
Uinta	20560	98.23
Teton	20425	91.55
Lincoln	18090	98.77
Carbon	15015	95.39
Converse	13940	98.87
Goshen	13300	98.19
Big Horn	11665	98.07
Sublette	9855	97.43
Platte	8620	98.51
Johnson	8575	99.71
Washakie	8150	97.02
Crook	7190	99.45
Weston	7130	99.72
Hot Springs	4795	99.69
Niobrara	2515	100.00