South Lyon Post Office

Post office

111 South Lafayette St, South Lyon, MI 48178

(248) 437-4501

By Appointment Only (248)437-4501

Appointment required

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

Book at USPS Directions Facilities in South Lyon Facilities in Michigan

South Lyon Post Office accepts new U.S. passport applications in person in South Lyon, MI. First-time and child visits are booked on the USPS scheduler. Search ZIP 48178. How to apply · How to renew