The "Old Jail" at 175 East King Street in Chambersburg, PA, is home to the Society. Listed on the National Register of Historic Places in 1970, the Old Jail also houses a museum and genealogical library. The Society also owns and maintains the Brown's Mill School (a primary school in use from 1836–1921).

The society offers research library access, tours, and lectures; the museum offers exhibits and tours; the school offers access.