Wyoming is the US state, 50th populous, and smallest state by the population in the USA. Wyoming is the 10th largest by area with a density of 2.26 inhabitants per km2. Cheyenne is the capital and the largest city covered in an area of 65 km2 and a population of 62,448 with a density of 957 inhabitants per km2 located in Laramie County. There are many tiny towns with small populations. Casper and Laramie are the 2nd and 3rd most populous cities located in Natrona and Albany country respectively.
| Rank | Name | Population | Area (km²) | Density ( inhabitants/km²) | County |
|---|---|---|---|---|---|
| 1 | Cheyenne | 62,448 | 65 | 957 | Laramie |
| 2 | Casper | 59,628 | 67 | 885 | Natrona |
| 3 | Laramie | 31,814 | 45 | 692 | Albany |
| 4 | Gillette | 31,797 | 50 | 625 | Campbell |
| 5 | Rock Springs | 24,138 | 50 | 481 | Sweetwater |
| 6 | Sheridan | 17,828 | 28 | 628 | Sheridan |
| 7 | Green River | 12,752 | 36 | 351 | Sweetwater |
| 8 | Evanston | 12,295 | 26 | 464 | Uinta |
| 9 | Riverton | 10,990 | 25 | 415 | Fremont |
| 10 | Jackson | 10,135 | 7 | 1,270 | Teton |
| 11 | Cody | 9,833 | 27 | 360 | Park |
| 12 | Rawlins | 9,173 | 21 | 433 | Carbon |
| 13 | Lander | 7,732 | 12 | 619 | Fremont |
| 14 | Torrington | 6,800 | 11 | 543 | Goshen |
| 15 | Powell | 6,476 | 11 | 573 | Park |
| 16 | Douglas | 6,469 | 12 | 515 | Converse |
| 17 | Worland | 5,456 | 12 | 464 | Washakie |
| 18 | Buffalo | 4,638 | 11 | 396 | Johnson |
| 19 | Wheatland | 3,652 | 10 | 341 | Platte |
| 20 | Mills | 3,568 | 5 | 621 | Natrona |
| 21 | Newcastle | 3,521 | 6 | 534 | Weston |
| 22 | Thermopolis | 3,038 | 6 | 488 | Hot Springs |
| 23 | Evansville | 2,850 | 9 | 277 | Natrona |
| 24 | Kemmerer | 2,700 | 20 | 131 | Lincoln |
| 25 | Bar Nunn | 2,646 | 5 | 406 | Natrona |
