About This Place
Allendale is a borough in Bergen County, New Jersey, United States. As of the 2010 United States Census, the borough population was 6,505.
Allendale was formed on November 8, 1894 from portions of Franklin Township, Hohokus Township and Orvil Township at the height of the Boroughitis phenomenon then sweeping through Bergen County.
Allendale is located at 41°01′58″N 74°08′02″W / 41.032713°N 74.133824°W / 41.032713; -74.133824 (41.032713, -74.133824).