4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sundance | 1 | 1,146 | 1,030 | 2.05% | 376 | 3 | Town |
| Moorcroft | 2 | 1,044 | 947 | 1.85% | 827 | 1 | Town |
| Pine Haven | 3 | 582 | 497 | 3.01% | 442 | 1 | Town |
| Hulett | 4 | 349 | 309 | 2.35% | 404 | 1 | Town |
Sundance is the largest city in Crook County, with a population of 1,146.
Hulett is the smallest city in Crook County, with a population of 349.
There are 4 cities in Crook County, Wyoming.