Post Offices List in Blanco County, Texas:
| Blanco Post Office | 402 4th St, Blanco, TX 78606 |
| Hye Post Office | 10261 W Us Highway 290, Hye, TX 78635 |
| Johnson City Post Office | 201 S Avenue G, Johnson City, TX 78636 |
| Round Mountain Post Office | 10603 Us Highway 281 N, Round Mountain, TX 78663 |