Post office locations in 21795
| Post Office | Address | Phone | Hours |
| WILLIAMSPORT | 28 W SALISBURY ST WILLIAMSPORT, MD 21795 - 9998 | 301-223-7007 | Mon-Fri 8:30am - 5:00pm Sat 9:00am - 12:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| WILLIAMSPORT | 28 W SALISBURY ST WILLIAMSPORT, MD 21795 - 9998 | 301-223-7007 | Mon-Fri 8:30am - 5:00pm Sat 9:00am - 12:00pm Sun Closed |