Founded in 1876, Hartley County is one of 254 counties in the state of Texas. Historically, Hartley County was formed from Bexar County. The city of Channing is the county seat. With FIPS code of 205, Hartley County has a population of 5,397 and area of 1,462 square miles (3,787 km2).
List of all cities in Hartley County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Channing, TX | 79018 | 806 |
| Hartley, TX | 79044 | 806 |
| Masterson, TX | 79018 | 806 |