Post Offices

Post Offices in & near Chain of Rocks, Missouri. Operating hours, locations, phone/fax number, services information.

Old Monr Post Office

Post Office in Old Monroe, Missouri on Sycamore St. Operating hours, phone number, services information, and other locations.

Address: 104 Sycamore St, Old Monroe, MO 63369
Phone: 636-665-5486
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 8:30am - 11:30am, 1:00pm - 4:00pm
Tuesday 8:30am - 11:30am, 1:00pm - 4:00pm
Wednesday 8:30am - 11:30am, 1:00pm - 4:00pm
Thursday 8:30am - 11:30am, 1:00pm - 4:00pm
Friday 8:30am - 11:30am, 1:00pm - 4:00pm
Saturday 9:15am - 10:00am
Sunday Closed

Lobby Hours

Monday 3:45pm
Tuesday 3:45pm
Wednesday 3:45pm
Thursday 3:45pm
Friday 3:45pm
Saturday 9:45am
Sunday Closed

Last Collection Times

Monday 9:00am - 11:30am, 1:00pm - 3:00pm
Tuesday 9:00am - 11:30am, 1:00pm - 3:00pm
Wednesday 9:00am - 11:30am, 1:00pm - 3:00pm
Thursday 9:00am - 11:30am, 1:00pm - 3:00pm
Friday 9:00am - 11:30am, 1:00pm - 3:00pm
Saturday Closed
Sunday Closed