The Parsippany CDP is bordered to the south and east by Troy Hills, to the northeast by Lake Hiawatha, and to the west by Rainbow Lakes, all in Parsippany-Troy Hills Township. It is also bordered by the borough of Mountain Lakes to the northwest and by Whippany in Hanover Township to the south.
According to the U.S. Census Bureau, the Parsippany CDP has a total area of 6.87 square miles (17.79 km2), of which 6.09 square miles (15.77 km2) are land and 0.78 square miles (2.02 km2), or 11.41%, are water.[1] Boonton Reservoir, in the north part of the CDP, drains north into the Rockaway River near Boonton. Lake Parsippany is in the southwest part of the CDP and drains southeast into Eastmans Brook. The entire CDP is within the watershed of the Passaic River.
Demographics
Parsippany was first listed as a CDP prior to the 2020 census.[4]