Post Offices

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

Mackinaw Post Office

Post Office in Mackinaw, Illinois on S Main St. Operating hours, phone number, services information, and other locations.

Address: 110 S Main St, Mackinaw, IL 61755
Phone: 309-359-6431
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:00am - 11:30am, 12:30pm - 4:30pm
Tuesday 9:00am - 11:30am, 12:30pm - 4:30pm
Wednesday 9:00am - 11:30am, 12:30pm - 4:30pm
Thursday 9:00am - 11:30am, 12:30pm - 4:30pm
Friday 9:00am - 11:30am, 12:30pm - 4:30pm
Saturday 9:00am - 11:00am
Sunday Closed

Lobby Hours

Monday 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 11:00am
Sunday Closed

Last Collection Times

Monday 9:00am - 11:30am, 12:30pm - 4:30pm
Tuesday 9:00am - 11:30am, 12:30pm - 4:30pm
Wednesday 9:00am - 11:30am, 12:30pm - 4:30pm
Thursday 9:00am - 11:30am, 12:30pm - 4:30pm
Friday 9:00am - 11:30am, 12:30pm - 4:30pm
Saturday 9:00am - 11:00am
Sunday Closed