City | Rank | County | 2024 Pop. |
|---|---|---|---|
| Casper | 1 | Natrona County | 58,523 |
| Douglas | 2 | Converse County | 6,471 |
| Mills | 3 | Natrona County | 4,614 |
| Bar Nunn | 4 | Natrona County | 2,999 |
| Evansville | 5 | Natrona County | 2,776 |
| Glenrock | 6 | Converse County | 2,421 |
| Lusk | 7 | Niobrara County | 1,417 |
| Hartrandt | 8 | Natrona County | 938 |
| Red Butte | 9 | Natrona County | 810 |
| Vista West | 10 | Natrona County | 795 |
| Casper Mountain | 11 | Natrona County | 716 |
| Rolling Hills | 12 | Converse County | 425 |
| Midwest | 13 | Natrona County | 285 |
| Homa Hills | 14 | Natrona County | 189 |
| Edgerton | 15 | Natrona County | 154 |
| Orin | 16 | Converse County | 106 |
| Bessemer Bend | 17 | Natrona County | 104 |
| Alcova | 18 | Natrona County | 98 |
| Meadow Acres | 19 | Converse County | 92 |
| Manville | 20 | Niobrara County | 91 |
| Brookhurst | 21 | Converse County | 75 |
| Lance Creek | 22 | Niobrara County | 57 |
| Van Tassell | 23 | Niobrara County | 21 |
| Lost Springs | 24 | Converse County | 4 |