Millsboro Post Office

Post office

100 Main St, Millsboro, DE 19966

Hours are not published. Call before you go.

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

Book at USPS Directions Facilities in Millsboro Facilities in Delaware

Millsboro Post Office accepts new U.S. passport applications in person in Millsboro, DE. First-time and child visits are booked on the USPS scheduler. Search ZIP 19966. How to apply · How to renew