Founded in 1837, Fannin County is one of 254 counties in the state of Texas. Historically, Fannin County was formed from Red River County. The city of Bonham is the county seat. With FIPS code of 147, Fannin County has a population of 36,569 and area of 892 square miles (2,310 km2).
List of all cities in Fannin County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Bailey, TX | 75413 | 903/430 |
| Bonham, TX | 75418 | 903/430 |
| Dodd City, TX | 75438 | 903/430 |
| Ector, TX | 75439 | 903/430 |
| Gober, TX | 75443 | 903/430 |
| Honey Grove, TX | 75446 | 903/430 |
| Ivanhoe, TX | 75447 | 903/430 |
| Ladonia, TX | 75449 | 903/430 |
| Leonard, TX | 75452 | 903/430 |
| Randolph, TX | 75475 | 903/430 |
| Ravenna, TX | 75476 | 903/430 |
| Savoy, TX | 75479 | 903/430 |
| Telephone, TX | 75488 | 903/430 |
| Trenton, TX | 75490 | 903/430 |
| Windom, TX | 75492 | 903/430 |