Post Offices

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

Grass Lak Post Office

Post Office in Grass Lake, Michigan on E Michigan Ave. Operating hours, phone number, services information, and other locations.

Address: 221 E Michigan Ave, Grass Lake, MI 49240
Phone: 517-522-5139
Fax: 517-522-3343
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

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

Lobby Hours

Monday 4:00pm
Tuesday 4:00pm
Wednesday 4:00pm
Thursday 4:00pm
Friday 4:00pm
Saturday 11:30am
Sunday Closed

Last Collection Times

Monday 9:00am - 11:00am, 12:00pm - 2:00pm
Tuesday 9:00am - 11:00am, 12:00pm - 2:00pm
Wednesday 9:00am - 11:00am, 12:00pm - 2:00pm
Thursday 9:00am - 11:00am, 12:00pm - 2:00pm
Friday 9:00am - 11:00am, 12:00pm - 2:00pm
Saturday Closed
Sunday Closed