Post Offices
Post Offices in & near Clopper, Maryland. Operating hours, locations, phone/fax number, services information.
Diamond Farm Post Office
Diamond Farms Post Office in Gaithersburg, Maryland on Firstfield Rd. Operating hours, phone number, services information, and other locations.
Address: 23 Firstfield Rd, Gaithersburg, MD 20878
Phone: 301-208-3735
Fax: 301-208-3713
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 9:00am - 5:00pmTuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday 9:00am - 1:00pm
Sunday Closed
Lobby Hours
Monday 5:00pmTuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:00pm
Sunday Closed
Last Collection Times
Monday 10:00am - 3:00pmTuesday 10:00am - 3:00pm
Wednesday 10:00am - 3:00pm
Thursday 10:00am - 3:00pm
Friday 10:00am - 3:00pm
Saturday Closed
Sunday Closed