Post Offices
Post Offices in & near Franklintown, Maryland. Operating hours, locations, phone/fax number, services information.
Security Sq Post Office
Security Sq Post Office in Windsor Mill, Maryland on Security Blvd. Operating hours, phone number, services information, and other locations.
Address: 6901 Security Blvd, Windsor Mill, MD 21244
Phone: 410-594-9284
Fax: 410-594-9318
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 11:00am - 1:00pmTuesday 11:00am - 1:00pm
Wednesday 11:00am - 1:00pm
Thursday 11:00am - 1:00pm
Friday 11:00am - 1:00pm
Saturday 11:00am - 1:00pm
Sunday Closed
Lobby Hours
Monday 11:00am - 1:00pmTuesday 11:00am - 1:00pm
Wednesday 11:00am - 1:00pm
Thursday 11:00am - 1:00pm
Friday 11:00am - 1:00pm
Saturday 11:00am - 1:00pm
Sunday Closed
Last Collection Times
Monday 1:30pmTuesday 1:30pm
Wednesday 1:30pm
Thursday 1:30pm
Friday 1:30pm
Saturday 1:30pm
Sunday Closed