Founded in 1858, Dimmit County is one of 254 counties in the state of Texas. Historically, Dimmit County was formed from Bexar County, Maverick County, Uvalde County and Webb County. The city of Carrizo Springs is the county seat. With FIPS code of 127, Dimmit County has a population of 8,473 and area of 1,331 square miles (3,447 km2).
List of all cities in Dimmit County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Asherton, TX | 78827 | 830 |
| Big Wells, TX | 78830 | 830 |
| Brundage, TX | 78834 | 830 |
| Carrizo Springs, TX | 78834 | 830 |
| Catarina, TX | 78836 | 830 |