2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Boise City | 1 | 1,034 | 1,163 | -1.99% | 701 | 1 | City |
| Keyes | 2 | 244 | 273 | -2.01% | 676 | 0 | Town |
Boise City is the largest city in Cimarron County, with a population of 1,034.
Keyes is the smallest city in Cimarron County, with a population of 244.
There are 2 cities in Cimarron County, Oklahoma.