The Montgomery County Archives 

Established on July 29, 1985, the Montgomery County Archives serves as the institutional memory of the government of Montgomery County, Maryland. The Archives is a repository for permanent records of historical or evidential value created or received by the County government in the course of its business activities. The Archives identifies, acquires, organizes, describes, and preserves historic records of the Montgomery County Government. 

Before You Arrive

Please read the Research Guide to understand how the collections are arranged.

Browse the finding aids to identify the record groups and record titles that will apply to your research subject. If you need guidance in locating the information you’re looking for, please contact the archivist ahead of your arrival. This advance work will make your research time at the archives more effective.

Contact the Archivist

       Call:      (301) 926-5002



8540 Anniversary Circle
Gaithersburg, MD 20877


Open Hours

Mondays :   10:00 AM to 4:00 PM
Thursdays : 10:00 AM to 2:00 PM
and by appointment.