Wyoming Population By County in 2018
Updated on December 2, 2021.

According to the US Census Bureau population estimates, there were 579,054 people living in Wyoming in 2018. Laramie County was the most populated county with 99,264 residents, followed by Natrona County with 79,140 residents, and Campbell County with 46,349 residents. Niobrara County with a population of 2,403 was the least populated county in Wyoming in 2018.

Use the map below to interactively explore the population of each county in Wyoming in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Wyoming Population By County (2018)
See also Population estimate for other years:
Table of Wyoming Population By County in 2018
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County Population % of State Population
Albany 38,937 6.72%
Big Horn 11,887 2.05%
Campbell 46,349 8.00%
Carbon 14,841 2.56%
Converse 13,682 2.36%
Crook 7,452 1.29%
Fremont 39,656 6.85%
Goshen 13,334 2.30%
Hot Springs 4,554 0.79%
Johnson 8,505 1.47%
Laramie 99,264 17.14%
Lincoln 19,537 3.37%
Natrona 79,140 13.67%
Niobrara 2,403 0.42%
Park 29,309 5.06%
Platte 8,571 1.48%
Sheridan 30,277 5.23%
Sublette 9,827 1.70%
Sweetwater 43,188 7.46%
Teton 23,261 4.02%
Uinta 20,299 3.51%
Washakie 7,886 1.36%
Weston 6,895 1.19%