Marathon Postal Store

Post office

5171 Overseas Highway, Marathon, FL 33050

By Appointment Only - Please call 305-743-5238 for further assistance.

Appointment required

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

Book at USPS Directions Facilities in Marathon Facilities in Florida

Marathon Postal Store accepts new U.S. passport applications in person in Marathon, FL. First-time and child visits are booked on the USPS scheduler. Search ZIP 33050. How to apply · How to renew