Guasti Post Office

Post office

323 N. Turner Ave, Guasti, CA 91743

Hours: Monday-Friday_8:30am-12:30pm and 3pm-4pm. Please call (909)937-6749 for more information.

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

Book at USPS Directions Facilities in Guasti Facilities in California

Guasti Post Office accepts new U.S. passport applications in person in Guasti, CA. First-time and child visits are booked on the USPS scheduler. Search ZIP 91743. How to apply · How to renew