Founded in 1875, Somervell County is one of 254 counties in the state of Texas. Historically, Somervell County was formed from Hood County. The city of Glen Rose is the county seat. With FIPS code of 425, Somervell County has a population of 9,469 and area of 187 square miles (484 km2).
List of all cities in Somervell County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Glen Rose, TX | 76043 | 254 |
| Nemo, TX | 76070 | 254 |
| Rainbow, TX | 76077 | 254 |