Alto Post Office

Post office

100 Sun Valley Road, Alto, NM 88312

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 Alto Facilities in New Mexico

Alto Post Office accepts new U.S. passport applications in person in Alto, NM. First-time and child visits are booked on the USPS scheduler. Search ZIP 88312. How to apply · How to renew