Post Offices List in Lavaca County, Texas:
| Hallettsville Post Office | 206 S La Grange St, Hallettsville, TX 77964 |
| Moulton Post Office | 206 S Main St, Moulton, TX 77975 |
| Shiner Post Office | 217 W 7th St, Shiner, TX 77984 |
| Sweet Home Post Office | 22 County Road 391e, Sweet Home, TX 77987 |
| Yoakum Post Office | 112 Nelson St, Yoakum, TX 77995 |