Post Offices List in San Jacinto County, Texas:
| Coldspring Post Office | 14231 State Highway 150 W, Coldspring, TX 77331 |
| Oakhurst Post Office | 1100 Highway 190 W, Oakhurst, TX 77359 |
| Pointblank Post Office | 30 S Counts Rd, Pointblank, TX 77364 |
| Shepherd Post Office | 1350 S Byrd Ave, Shepherd, TX 77371 |