15 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Buffalo | Johnson County | 4,712 |
| Bar Nunn | Natrona County | 3,023 |
| Basin | Big Horn County | 1,350 |
| Byron | Big Horn County | 582 |
| Bear River | Summit County | 521 |
| Boulder Flats | Fremont County | 480 |
| Bedford | Lincoln County | 442 |
| Baggs | Carbon County | 407 |
| Burlington | Big Horn County | 394 |
| Big Piney | Sublette County | 388 |
| Burns | Laramie County | 384 |
| Bondurant | Sublette County | 113 |
| Bessemer Bend | Natrona County | 107 |
| Brookhurst | Converse County | 82 |
| Bairoil | Sweetwater County | 65 |