Founded in 1876, Dallam County is one of 254 counties in the state of Texas. Historically, Dallam County was formed from Bexar County. The city of Dalhart is the county seat. With FIPS code of 111, Dallam County has a population of 7,172 and area of 1,505 square miles (3,898 km2).
List of all cities in Dallam County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Arneckeville, TX | 77954 | 361 |
| Cheapside, TX | 77954 | 361 |
| Concrete, TX | 77954 | 361 |
| Cuero, TX | 77954 | 361 |
| Edgar, TX | 77954 | 361 |
| Hochheim, TX | 77967 | 361 |
| Lindenau, TX | 77954 | 361 |
| Meyersville, TX | 77974 | 361 |
| Nordheim, TX | 78141 | 361 |
| Stratton, TX | 77954 | 361 |
| Thomaston, TX | 77989 | 361 |
| Westhoff, TX | 77994 | 830 |
| Yorktown, TX | 78164 | 361 |