Post Offices in & near Johnstown, Colorado. Operating hours, locations, phone/fax number, services information.
Post Office in Johnstown, Colorado on Castle Pines Ave. Operating hours, phone number, services information, and other locations.
Address: 121 Castle Pines Ave, Johnstown, CO 80534
Phone: 970-587-4246
Fax: 970-587-0140
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457