PassportMap

Guilford Post Office

Post office

42 Water Street, Guilford, CT 06437

(203) 453-3552

Hours are not published. Call before you go.

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

Guilford Post Office accepts new U.S. passport applications in person in Guilford, CT. First-time and child visits are booked on the USPS scheduler. Search ZIP 06437. How to apply · How to renew