Counties · Wyoming

Counties of Wyoming

Wyoming has 23 counties. Laramie County is the largest with 102,938 residents in 2025. 17 of the 23 gained residents between 2020 and 2025 by the Census Bureau's estimates.

What counties are in Wyoming?

Sorted by the 2025 population estimate; sort by any column.

Counties of Wyoming: 2025 estimate, change since 2020, ACS 2020-2024 5-year estimates

Laramie County	102,938	+2.4%	10	27	$80,173	$348,700
Natrona County	80,526	+0.7%	18	20	$72,156	$273,000
Campbell County	48,145	+2.4%	3	10	$89,869	$279,100
Sweetwater County	41,267	−2.4%	19	13	$75,034	$251,400
Fremont County	39,464	+0.6%	14	12	$64,904	$268,800
Albany County	38,558	+4.0%	6	11	$61,917	$333,000
Sheridan County	33,241	+7.5%	9	7	$71,388	$394,900
Park County	31,171	+5.2%	7	7	$73,035	$400,500
Teton County	23,333	+0.0%	9	7	$124,172	$1,633,900
Lincoln County	21,180	+8.2%	24	5	$89,330	$372,600
Uinta County	20,728	+1.4%	9	6	$82,980	$290,000
Carbon County	14,013	−3.6%	12	5	$70,511	$222,700
Converse County	13,824	+0.5%	6	4	$81,558	$292,700
Goshen County	12,640	+1.1%	8	4	$58,929	$239,600
Big Horn County	12,024	+4.4%	11	3	$62,101	$216,500
Sublette County	8,929	+2.3%	7	3	$83,597	$376,200
Johnson County	8,908	+5.4%	2	3	$64,871	$326,800
Platte County	8,634	+0.4%	12	3	$67,718	$297,900
Crook County	7,852	+9.3%	5	2	$79,637	$285,800
Washakie County	7,597	−1.1%	2	3	$65,714	$206,000
Weston County	6,840	−0.0%	4	2	$89,509	$221,700
Hot Springs County	4,600	−0.4%	5	2	$61,250	$227,500
Niobrara County	2,341	−5.1%	4	1	$64,113	$221,500

Source: PEP Vintage 2025 (CO-EST2025); American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Census population estimates

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections