| Rank | City | Population (2012) |
|---|---|---|
| 1 | Cheyenne, Wyoming | 61,537 |
| 2 | Casper, Wyoming | 57,813 |
| 3 | Laramie, Wyoming | 31,681 |
| 4 | Gillette, Wyoming | 31,378 |
| 5 | Rock Springs, Wyoming | 24,047 |
| 6 | Sheridan, Wyoming | 17,698 |
| 7 | Green River, Wyoming | 12,801 |
| 8 | Evanston, Wyoming | 12,262 |
| 9 | Riverton, Wyoming | 10,971 |
| 10 | Jackson, Wyoming | 9,838 |
| 11 | Cody, Wyoming | 9,689 |
| 12 | Rawlins, Wyoming | 9,113 |
| 13 | Lander, Wyoming | 7,677 |
| 14 | Torrington, Wyoming | 6,757 |
| 15 | Powell, Wyoming | 6,308 |
| 16 | Douglas, Wyoming | 6,280 |
| 17 | Worland, Wyoming | 5,454 |
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