Post Offices List in Seal Beach City, California:
| Mariner Post Office | 221 Main St, Seal Beach, CA 90740 |
| Seal Beach Post Office | 2929 Westminster Ave, Seal Beach, CA 90740 |
| Leisure World Post Office | 13580 Saint Andrews Dr, Seal Beach, CA 90740 |
| Mariner Post Office | 221 Main St, Seal Beach, CA 90740 |
| Seal Beach Post Office | 2929 Westminster Ave, Seal Beach, CA 90740 |
| Leisure World Post Office | 13580 Saint Andrews Dr, Seal Beach, CA 90740 |