Founded in 1856, Hamilton County is one of 254 counties in the state of Texas. Historically, Hamilton County was formed from Bosque County, Comanche County and Lampasas County. The city of Hamilton is the county seat. With FIPS code of 193, Hamilton County has a population of 8,229 and area of 836 square miles (2,165 km2).
List of all cities in Hamilton County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Carlton, TX | 76436 | 254 |
| Duffau, TX | 76457 | 254 |
| Hamilton, TX | 76531 | 254 |
| Hico, TX | 76457 | 254 |
| Indian Gap, TX | 76531 | 254 |
| Pottsville, TX | 76565 | 254 |
| Shive, TX | 76531 | 254 |