Phillipsburg
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 3.191
- State:
- New Jersey
Phillipsburg is a town located in Warren County, New Jersey. Phillipsburg has a 2026 population of 15,393. Phillipsburg is currently growing at a rate of 0.36% annually and its population has increased by 1.24% since the most recent census, which recorded a population of 15,205 in 2020.