Uspo - Johnstown

Post office

121 Castle Pines Ave, Johnstown, CO 80534

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 Johnstown Facilities in Colorado

Uspo - Johnstown accepts new U.S. passport applications in person in Johnstown, CO. First-time and child visits are booked on the USPS scheduler. Search ZIP 80534. How to apply · How to renew