| City | County | 2026 Pop. ↓ |
|---|---|---|
| Buffalo | Johnson County | 4,794 |
| Bar Nunn | Natrona County | 3,017 |
| Basin | Big Horn County | 1,345 |
| Byron | Big Horn County | 576 |
| Bear River | Uinta County | 525 |
| Boulder Flats | Fremont County | 484 |
| Bedford | Lincoln County | 458 |
| Burlington | Big Horn County | 408 |
| Burns | Laramie County | 405 |
| Baggs | Carbon County | 404 |
| Big Piney | Sublette County | 383 |
| Bondurant | Sublette County | 121 |
| Bessemer Bend | Natrona County | 101 |
| Brookhurst | Converse County | 75 |
| Bairoil | Sweetwater County | 65 |