Post Offices List in Antioch City, California:
| Antioch Post Office | 2730 W Tregallas Rd, Antioch, CA 94509 |
| Rivertown Post Office | 420 W 4th St, Antioch, CA 94509 |
| Antioch Post Office | 2730 W Tregallas Rd, Antioch, CA 94509 |
| Rivertown Post Office | 420 W 4th St, Antioch, CA 94509 |