Clinton Il Main Post Office

Post office

105 N. Quincy, Clinton, IL 61727

(217) 935-5584

Appointments required, call (217)935-5584

Appointment required

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

Book at USPS Directions Facilities in Clinton Facilities in Illinois

Clinton Il Main Post Office accepts new U.S. passport applications in person in Clinton, IL. First-time and child visits are booked on the USPS scheduler. Search ZIP 61727. How to apply · How to renew