- Source: Hillsborough (CDP), New Jersey
Hillsborough is a census-designated place (CDP) located in the center of Hillsborough Township, Somerset County, in the U.S. state of New Jersey. It was first listed as a CDP prior to the 2020 census.
The CDP is in south-central Somerset County and is bordered to the northwest by Flagtown, to the west by Neshanic, and to the south by Belle Mead. U.S. Route 206 passes through the community, leading north 5 miles (8 km) to Somerville, the county seat, and south 12 miles (19 km) to Princeton.
Demographics
As of the 2020 United States census, the area had a population of 22,214.