3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Boise City | 1 | 1,073 | 1,163 | -1.65% | 727 | 1.48 | City |
| Keyes | 2 | 252 | 272 | -1.56% | 698 | 0.36 | Town |
| Felt | 3 | 98 | 105 | 7.69% | 186 | 0.53 | CDP |
Boise City is the largest city in Cimarron County, with a population of 1,073.
Felt is the smallest city in Cimarron County.
There are 3 cities in Cimarron County, Oklahoma.