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Postal Security Sq Post Office
6901 Security Blvd, Windsor Mill, MD 21244
Phone: 410-594-9284
Fax: 410-594-9318
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)
Monday 11:00am - 1:00pm
Tuesday 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
Monday 1:30pm
Tuesday 1:30pm
Wednesday 1:30pm
Thursday 1:30pm
Friday 1:30pm
Saturday 1:30pm
Sunday Closed
Monday 11:00am - 2:00pm
Tuesday 11:00am - 2:00pm
Wednesday 11:00am - 2:00pm
Thursday 11:00am - 2:00pm
Friday 11:00am - 2:00pm
Saturday 11:00am - 2:00pm
Sunday Closed
Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.
*Please call to verify information. Is anything incorrect? Let us know here
Nearby Post Offices:
Windsor Mill
2513 N Rolling Rd
0.7 mile away
Catonsville Carrier Annex
700 Geipe Rd Rear
1.2 miles away
Catonsville
1001 Frederick Rd
1.7 miles away
Gwynn Oak
6101 Liberty Rd
1.8 miles away
Baltimore County
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