| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Clarksville | 1 | 2,924 | 2,844 | 0.55% | 964 | 3 | City |
| Bogata | 2 | 1,129 | 1,081 | 0.98% | 798 | 1 | City |
| Detroit | 3 | 715 | 704 | 0.28% | 452 | 2 | Town |
| Avery | 4 | 435 | 417 | 0.69% | 458 | 1 | Town |
| Annona | 5 | 185 | 184 | 0% | 231 | 1 | Town |
Clarksville is the largest city in Red River County, with a population of 2,924.
Annona is the smallest city in Red River County, with a population of 185.
There are 5 cities in Red River County, Texas.