| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sundance | 1 | 1,165 | 1,032 | 2.1% | 382 | 3 | Town |
| Moorcroft | 2 | 1,041 | 943 | 1.76% | 824 | 1 | Town |
| Pine Haven | 3 | 596 | 498 | 2.94% | 453 | 1 | Town |
| Hulett | 4 | 356 | 311 | 2.01% | 413 | 1 | Town |
Sundance is the largest city in Crook County, with a population of 1,165.
Hulett is the smallest city in Crook County, with a population of 356.
There are 4 cities in Crook County, Wyoming.