| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cordell | 1 | 2,737 | 2,761 | -0.33% | 1,217 | 2 | City |
| Burns Flat | 2 | 1,909 | 1,947 | -0.47% | 2,204 | 1 | Town |
| Sentinel | 3 | 754 | 757 | -0.26% | 1,212 | 1 | Town |
| Corn | 4 | 587 | 594 | -0.34% | 1,682 | 0 | Town |
| Canute | 5 | 488 | 481 | 0% | 773 | 1 | Town |
| Dill City | 6 | 416 | 416 | -0.24% | 720 | 1 | Town |
| Bessie | 7 | 182 | 181 | 0% | 351 | 1 | Town |
| Rocky | 8 | 125 | 127 | -0.79% | 595 | 0 | Town |
| Colony | 9 | 105 | 107 | -0.94% | 114 | 1 | Town |
| Foss | 10 | 105 | 104 | 0% | 143 | 1 | Town |
Cordell is the largest city in Washita County, with a population of 2,737.
Foss is the smallest city in Washita County, with a population of 105.
There are 10 cities in Washita County, Oklahoma.