5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Clarksville | 1 | 2,875 | 2,843 | 0.21% | 948 | 3 | City |
| Bogata | 2 | 1,117 | 1,074 | 0.72% | 789 | 1 | City |
| Detroit | 3 | 706 | 703 | 0% | 446 | 2 | Town |
| Avery | 4 | 453 | 423 | 1.34% | 477 | 1 | Town |
| Annona | 5 | 185 | 184 | 0% | 231 | 1 | Town |
Clarksville is the largest city in Red River County, with a population of 2,875.
Annona is the smallest city in Red River County, with a population of 185.
There are 5 cities in Red River County, Texas.