Founded in 1856, Atascosa County is one of 254 counties in the state of Texas. Historically, Atascosa County was formed from Bexar County. The city of Jourdanton is the county seat. With FIPS code of 13, Atascosa County has a population of 49,939 and area of 1,232 square miles (3,191 km2).
List of all cities in Atascosa County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Campbellton, TX | 78008 | 830 |
| Charlotte, TX | 78011 | 830 |
| Christine, TX | 78012 | 830 |
| Fashing, TX | 78008 | 830 |
| Jourdanton, TX | 78026 | 830 |
| Leming, TX | 78050 | 830 |
| Lytle, TX | 78052 | 830 |
| Peggy, TX | 78062 | 830 |
| Pleasanton, TX | 78064 | 830 |
| Poteet, TX | 78065 | 830 |