Parsippany is a census-designated place (CDP) and the central community in the township of Parsippany-Troy Hills, Morris County, in the U.S. state of New Jersey. It includes development around Lake Parsippany, as well as neighborhoods in the eastern part of the township, between Troy Hills to the south and Lake Hiawatha to the north. The southern end of Boonton Reservoir is also in the CDP.

Interstate 80 and Interstate 287 intersect in the center of the CDP. I-80 leads east 24 miles (39 km) to its terminus at Interstate 95 in Teaneck and west 46 miles (74 km) to the Delaware Water Gap, while I-287 leads northeast 25 miles (40 km) to Suffern, New York, and southwest 26 miles (42 km) to Somerville.

Parsippany was first listed as a CDP prior to the 2020 census. In common usage, "Parsippany" usually applies to the entire township.

As of the 2020 United States census, the population was 22,778.

Historical population

Census	Pop.	Note	%±
2020	22,778		—
U.S. Decennial Census 2020 2020