4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Sundance | 1 | 1,169 | 1,030 | 2.01% | 383 | 3 | Town |
| Moorcroft | 2 | 1,064 | 947 | 1.92% | 842 | 1 | Town |
| Pine Haven | 3 | 599 | 497 | 2.92% | 455 | 1 | Town |
| Hulett | 4 | 357 | 309 | 2.29% | 414 | 1 | Town |
Sundance is the largest city in Crook County, with a population of 1,169.
Hulett is the smallest city in Crook County, with a population of 357.
There are 4 cities in Crook County, Wyoming.