Post office locations in 21793
| Post Office | Address | Phone | Hours |
| WALKERSVILLE | 7 E FREDERICK ST WALKERSVILLE, MD 21793 - 9998 | 301-845-8342 | Mon-Fri 8:30am - 12:00pm 1:00pm - 5:00pm Sat 8:30am - 12:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| WALKERSVILLE | 7 E FREDERICK ST WALKERSVILLE, MD 21793 - 9998 | 301-845-8342 | Mon-Fri 8:30am - 12:00pm 1:00pm - 5:00pm Sat 8:30am - 12:00pm Sun Closed |