Post office locations in 20838
| Post Office | Address | Phone | Hours |
| BARNESVILLE | 22110 BEALLSVILLE RD BARNESVILLE, MD 20838 - 9998 | 301-972-8153 | Mon-Fri 10:00 AM - 01:30 PM 02:30 PM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |
| Post Office | Address | Phone | Hours |
| BARNESVILLE | 22110 BEALLSVILLE RD BARNESVILLE, MD 20838 - 9998 | 301-972-8153 | Mon-Fri 10:00 AM - 01:30 PM 02:30 PM - 05:00 PM Sat 09:00 AM - 12:00 PM Sun Closed |