Riverdale is a borough in Morris County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 4,107, an increase of 548 (+15.4%) from the 2010 census count of 3,559, which in turn reflected an increase of 1,061 (+42.5%) from the 2,498 counted in the 2000 census.

Pequannock Township is a township in Morris County, in the U.S. state of New Jersey. As of the 2020 United States census, the township's population was 15,571, an increase of 31 (+0.2%) from the 2010 census count of 15,540, which in turn reflected an increase of 1,652 (+11.9%) from the 13,888 counted in the 2000 census. The primary community in the township is the census-designated place of Pompton Plains.