Post office locations in 21793
| Post Office | Address | Phone | Hours |
| WALKERSVILLE | 7 E FREDERICK ST WALKERSVILLE, MD 21793 - 9998 | 301-845-8342 | Mon-Fri 08:30 AM - 12:00 PM 01:00 PM - 05:00 PM Sat 08:30 AM - 12:00 PM Sun Closed |
| Post Office | Address | Phone | Hours |
| WALKERSVILLE | 7 E FREDERICK ST WALKERSVILLE, MD 21793 - 9998 | 301-845-8342 | Mon-Fri 08:30 AM - 12:00 PM 01:00 PM - 05:00 PM Sat 08:30 AM - 12:00 PM Sun Closed |