5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cheyenne | 1 | 720 | 768 | -1.1% | 729 | 1 | Town |
| Hammon | 2 | 457 | 475 | -0.65% | 624 | 1 | Town |
| Reydon | 3 | 128 | 139 | -1.54% | 260 | 0 | Town |
| Sweetwater | 4 | 102 | 102 | 0% | 6 | 16 | Town |
| Strong City | 5 | 29 | 29 | 0% | 58 | 0 | Town |
Cheyenne is the largest city in Roger Mills County, with a population of 720.
Strong City is the smallest city in Roger Mills County, with a population of 29.
There are 5 cities in Roger Mills County, Oklahoma.