Post Offices
Post Offices in & near Frost, Michigan. Operating hours, locations, phone/fax number, services information.
Sidnaw Post Office
Post Office in Sidnaw, Michigan on E State Highway M28. Operating hours, phone number, services information, and other locations.
Address: 13640 E State Highway M28, Sidnaw, MI 49961
Phone: 906-355-2527
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Retail Hours
Monday 2:30pm - 4:30pmTuesday 2:30pm - 4:30pm
Wednesday 2:30pm - 4:30pm
Thursday 2:30pm - 4:30pm
Friday 2:30pm - 4:30pm
Saturday 10:00am - 11:00am
Sunday Closed
Lobby Hours
Monday 4:15pmTuesday 4:15pm
Wednesday 4:15pm
Thursday 4:15pm
Friday 4:15pm
Saturday 10:30am
Sunday Closed
Last Collection Times
Monday 2:30pm - 4:30pmTuesday 2:30pm - 4:30pm
Wednesday 2:30pm - 4:30pm
Thursday 2:30pm - 4:30pm
Friday 2:30pm - 4:30pm
Saturday Closed
Sunday Closed