Largest Counties in Wyoming

There are a total of 23 counties or county equivalents in the U.S. state of Wyoming. Among them, the five biggest counties by population are Laramie, Natrona, Campbell, Sweetwater and Fremont while the largest five by area are Sweetwater, Fremont, Carbon, Park, and Natrona. In the following table, you will see the list of all counties in Wyoming, each with population, land area, density and the time of establishment.

Rank County Population County Seat Established Area (km2) Density
1 Laramie County 94,472 Cheyenne 1867 6,957 13.58
2 Natrona County 78,610 Casper 1888 13,831 5.68
3 Campbell County 47,863 Gillette 1911 12,424 3.85
4 Sweetwater County 45,256 Green River 1867 27,003 1.68
5 Fremont County 41,099 Lander 1884 23,784 1.73
6 Albany County 37,265 Laramie 1868 11,070 3.37
7 Sheridan County 29,585 Sheridan 1888 6,535 4.53
8 Park County 28,691 Cody 1909 17,982 1.6
9 Teton County 21,664 Jackson 1921 10,381 2.09
10 Uinta County 21,014 Evanston 1869 5,392 3.9
11 Lincoln County 17,950 Kemmerer 1911 10,539 1.7
12 Carbon County 15,655 Rawlins 1868 20,453 0.77
13 Converse County 13,997 Douglas 1888 11,020 1.27
14 Goshen County 13,625 Torrington 1911 5,763 2.36
15 Big Horn County 11,783 Basin 1896 8,125 1.45
16 Sublette County 10,357 Pinedale 1921 12,644 0.82
17 Platte County 8,745 Wheatland 1911 5,400 1.62
18 Johnson County 8,604 Buffalo 1875 10,790 0.8
19 Washakie County 8,453 Worland 1911 5,802 1.46
20 Crook County 7,144 Sundance 1875 7,405 0.96
21 Weston County 7,071 Newcastle 1890 6,211 1.14
22 Hot Springs County 4,811 Thermopolis 1911 5,190 0.93
23 Niobrara County 2,445 Lusk 1911 6,801 0.36

Largest Counties in Wyoming

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