There are 2 Post Offices in Johnstown, Colorado, serving a population of 14,386 people in an area of 14 square miles. There is 1 Post Office per 7,193 people, and 1 Post Office per 6 square miles.
In Colorado, Johnstown is ranked 342nd of 568 cities in Post Offices per capita, and 341st of 568 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Johnstown Post Offices.
Mail & Copy 257 Johnstown Center Drive Johnstown, CO Mailing Service, Postal Services
United States Postal Service 121 Castle Pines Avenue Johnstown, CO Mailing Service, Postal Services