
Hackettstown
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 3.612
- State:
- New Jersey
Hackettstown is a town located in Warren County, New Jersey. Hackettstown has a 2025 population of 10,053. Hackettstown is currently declining at a rate of -0.36% annually and its population has decreased by -1.75% since the most recent census, which recorded a population of 10,232 in 2020.
The average household income in Hackettstown is $107,500 with a poverty rate of 7.84%. The median age in Hackettstown is 38 years: 38.4 years for males, and 37.6 years for females.