Founded in 1887, Mills County is one of 254 counties in the state of Texas. Historically, Mills County was formed from Brown County, Comanche County, Hamilton County and Lampasas County. The city of Goldthwaite is the county seat. With FIPS code of 333, Mills County has a population of 4,480 and area of 748 square miles (1,937 km2).
List of all cities in Mills County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Caradan, TX | 76844 | 325 |
| Goldthwaite, TX | 76844 | 325 |
| Mullin, TX | 76864 | 325 |
| Priddy, TX | 76870 | 325 |
| Star, TX | 76880 | 325 |