
Hillsborough township
- County:
- Somerset County
- County Seat:
- No
- Area (mi²):
- 54.617
- State:
- New Jersey
Hillsborough township is located in Somerset County, New Jersey. Hillsborough township has a 2025 population of 44,953. Hillsborough township is currently growing at a rate of 0.92% annually and its population has increased by 3.98% since the most recent census, which recorded a population of 43,233 in 2020.
The average household income in Hillsborough township is $194,292 with a poverty rate of 2.79%. The median age in Hillsborough township is 42.1 years: 41.1 years for males, and 42.8 years for females.