Post office locations in 21122
| Post Office | Address | Phone | Hours |
| PASADENA | 4301 MOUNTAIN RD PASADENA, MD 21122 - 9998 | 443-637-5320 | Mon-Fri 9:00am - 5:00pm Sat 9:00am - 1:00pm Sun Closed |
| RIVIERA BEACH | 8489 RUGBY RD PASADENA, MD 21122 - 9997 | 410-439-8495 | Mon-Fri 9:00am - 1:00pm 1:30pm - 4:00pm Sat 9:00am - 12:00pm Sun Closed |