The museum building was originally built in 1913 to house the City Hall, Fire Station and Police Department (and even the jail). As the city grew, those departments required more space and were eventually located elsewhere. The Society took possession of the building and restored it for the purposes of a museum in 1976, and the expansive addition was constructed in 1989.

The museum is open every Saturday from 11am to 2pm. Admission is free, but donations are gladly accepted. There is a small gift shop offering an array of Glendora-themed gifts from logo mugs to original Glendora stock certificates and citrus labels.

General Meetings of the Glendora Historical Society are held six times a year on the fourth Monday of January, March, May, July, September and November in the Bidwell Forum on the second floor of the Glendora Public Library (140 S. Glendora Avenue).