Founded in 1858, Knox County is one of 254 counties in the state of Texas. Historically, Knox County was formed from Bexar County. The city of Benjamin is the county seat. With FIPS code of 275, Knox County has a population of 3,351 and area of 854 square miles (2,212 km2).
List of all cities in Knox County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Benjamin, TX | 79505 | 940 |
| Goree, TX | 76363 | 940 |
| Knox City, TX | 79529 | 940 |
| Munday, TX | 76371 | 940 |