Post Offices
Post Offices in & near Great Mills, Maryland. Operating hours, locations, phone/fax number, services information.
Great Mill Post Office
Post Office in Great Mills, Maryland on Point Lookout Rd. Operating hours, phone number, services information, and other locations.
Address: 20210 Point Lookout Rd, Great Mills, MD 20634
Phone: 301-994-2240
Fax: 301-994-9431
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 9:00am - 4:30pmTuesday 9:00am - 4:30pm
Wednesday 9:00am - 4:30pm
Thursday 9:00am - 4:30pm
Friday 9:00am - 4:30pm
Saturday 9:00am - 12:00pm
Sunday Closed
Lobby Hours
Monday 24 hoursTuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours
Last Collection Times
Monday 4:30pmTuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 12:30am
Sunday Closed