De grenzen van Germantown op het ogenblik dat het in 1854 werd samengevoegd met de stad Philadelphia waren Wissahickon Avenue, Roberts Avenue, Wister Street, Stenton Avenue en Washington Lane. ###>Germantown has been consistently bounded on the southwest by Wissahickon Avenue, on the southeast by Roberts Avenue, and on the east by Wister Street and Stenton Avenue, but its northwest border has expanded and contracted over the years.