List of counties in Wyoming
The US state Wyoming is divided into 23 counties . The first five counties, Laramie , Sweetwater , Carbon , Albany and Uinta , were created with the establishment of Wyoming Territory , the precursor of the later state, in 1868 or shortly before that.
| county | founding | Population 2010 census | Administrative headquarters | Area (in km²) |
|---|---|---|---|---|
| Albany | 1868 | 36,299 | Laramie | 11,070 |
| Big horn | 1896 | 11,668 | Basin | 8,125 |
| Campbell | 1911 | 46.133 | Gillette | 12,424 |
| Carbon | 1868 | 15,885 | Rawlins | 20,453 |
| Converse | 1888 | 13,833 | Douglas | 11,020 |
| Crook | 1875 | 7,083 | Sun Dance | 7,405 |
| Fremont | 1884 | 40.123 | Countries | 23,784 |
| Goshen | 1911 | 13,249 | Torrington | 5,763 |
| Hot springs | 1911 | 4,812 | Thermopolis | 5,190 |
| Johnson | 1875 | 8,569 | Buffalo | 10,790 |
| Laramie | 1867 | 91,738 | Cheyenne | 6,957 |
| Lincoln | 1911 | 18,106 | Kemmerer | 10,539 |
| Natrona | 1888 | 75,450 | Casper | 13,831 |
| Niobrara | 1911 | 2,484 | Lusk | 6,801 |
| park | 1909 | 28.205 | Cody | 17,982 |
| plate | 1911 | 8,619 | Wheatland | 8,667 |
| Sheridan | 1888 | 29,116 | Sheridan | 6,535 |
| Sublet | 1921 | 10,247 | Pinedale | 12,644 |
| Sweetwater | 1867 | 43,806 | Green River | 27.003 |
| Tetons | 1921 | 21,294 | Jackson | 10,381 |
| Uinta | 1869 | 21,118 | Evanston | 5,392 |
| Washakie | 1911 | 8,533 | Worland | 5,802 |
| Weston | 1890 | 7,208 | Newcastle | 6.211 |