Mio Post Office

Post office

213 S. Morenci Ave, Mio, MI 48647

(989) 826-5531

Appointment required; Hours are M-F 9am - 3:30pm. Call 989-826-5531

Appointment required

Hours and addresses come from the State Department listing, updated November 2, 2026.

Book at USPS Directions Facilities in Mio Facilities in Michigan

Mio Post Office accepts new U.S. passport applications in person in Mio, MI. First-time and child visits are booked on the USPS scheduler. Search ZIP 48647. How to apply · How to renew