4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sundance | 1 | 1,143 | 1,030 | 2.05% | 375 | 3.05 | Town |
| Moorcroft | 2 | 1,036 | 948 | 1.77% | 820 | 1.26 | Town |
| Pine Haven | 3 | 573 | 497 | 2.69% | 435 | 1.32 | Town |
| Hulett | 4 | 338 | 308 | 1.81% | 392 | 0.86 | Town |
Sundance is the largest city in Crook County, with a population of 1,143.
Hulett is the smallest city in Crook County.
There are 4 cities in Crook County, Wyoming.