Founded in 1887, Sutton County is one of 254 counties in the state of Texas. Historically, Sutton County was formed from Crockett County. The city of Sonora is the county seat. With FIPS code of 435, Sutton County has a population of 3,319 and area of 1,454 square miles (3,766 km2).
List of all cities in Sutton County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Sonora, TX | 76950 | 325 |