Post Offices

Post Offices in & near Charlestown, Maryland. Operating hours, locations, phone/fax number, services information.

Carroll Post Office

Carroll Post Office in Baltimore, Maryland on S Loudon Ave. Operating hours, phone number, services information, and other locations.

Address: 340 S Loudon Ave, Baltimore, MD 21229
Phone: 410-644-0525
Fax: 410-525-8329
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 10:00am - 2:00pm, 3:00pm - 4:00pm
Tuesday 10:00am - 2:00pm, 3:00pm - 4:00pm
Wednesday 10:00am - 2:00pm, 3:00pm - 4:00pm
Thursday 10:00am - 2:00pm, 3:00pm - 4:00pm
Friday 10:00am - 2:00pm, 3:00pm - 4:00pm
Saturday 10:00am - 12:00pm
Sunday Closed

Lobby Hours

Monday 7:00am - 2:00pm, 3:00pm - 4:00pm
Tuesday 7:00am - 2:00pm, 3:00pm - 4:00pm
Wednesday 7:00am - 2:00pm, 3:00pm - 4:00pm
Thursday 7:00am - 2:00pm, 3:00pm - 4:00pm
Friday 7:00am - 2:00pm, 3:00pm - 4:00pm
Saturday 7:00am - 2:00pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 2:30pm
Sunday Closed