Founded in 1848, Hays County is one of 254 counties in the state of Texas. Historically, Hays County was formed from Travis County. The city of San Marcos is the county seat. With FIPS code of 209, Hays County has a population of 255,397 and area of 678 square miles (1,756 km2).
List of all cities in Hays County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Austin, TX | 78737 | 512/737 |
| Buda, TX | 78610 | 512/737 |
| Creedmoor, TX | 78610 | 512/737 |
| Driftwood, TX | 78619 | 512/737 |
| Dripping Springs, TX | 78620 | 512/737 |
| Henly, TX | 78620 | 512/737 |
| Kyle, TX | 78640 | 512/737 |
| Mount Sharp, TX | 78620 | 512/737 |
| Mountain City, TX | 78610 | 512/737 |
| Niederwald, TX | 78640 | 512/737 |
| Pioneer Town, TX | 78676 | 512/737 |
| San Marcos, TX | 78666 | 512/737 |
| 78667 | 512/737 | |
| Uhland, TX | 78640 | 512/737 |
| Wimberley, TX | 78676 | 512/737 |
| Woodcreek, TX | 78676 | 512/737 |