Post Offices List in El Cajon City, California:
| Bostonia Post Office | 867 N 2nd St, El Cajon, CA 92021 |
| El Cajon Post Office | 401 W Lexington Ave, El Cajon, CA 92020 |
| Bostonia Post Office | 867 N 2nd St, El Cajon, CA 92021 |
| El Cajon Post Office | 401 W Lexington Ave, El Cajon, CA 92020 |