Founded in 1836, Red River County is one of 254 counties in the state of Texas. Historically, Red River County was one of the original 23 counties. The city of Clarksville is the county seat. With FIPS code of 387, Red River County has a population of 11,555 and area of 1,050 square miles (2,719 km2).
List of all cities in Red River County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Annona, TX | 75550 | 903/430 |
| Avery, TX | 75554 | 903/430 |
| Bagwell, TX | 75412 | 903/430 |
| Bogata, TX | 75417 | 903/430 |
| Clarksville, TX | 75426 | 903/430 |
| Detroit, TX | 75436 | 903/430 |