
Hillsdale
- County:
- Bergen County
- County Seat:
- No
- Area (mi²):
- 2.902
- State:
- New Jersey
Hillsdale is a borough located in Bergen County, New Jersey. Hillsdale has a 2025 population of 10,028. Hillsdale is currently declining at a rate of -0.17% annually and its population has decreased by -0.84% since the most recent census, which recorded a population of 10,113 in 2020.
The average household income in Hillsdale is $196,123 with a poverty rate of 3.92%. The median age in Hillsdale is 42.4 years: 42.8 years for males, and 42 years for females.