Allamuchy
- County:
- Warren County
- County Seat:
- No
- Area (mi²):
- 2.577
- State:
- New Jersey
Allamuchy is a CDP located in Warren County, New Jersey. Allamuchy has a 2025 population of 128. Allamuchy is currently growing at a rate of 7.56% annually and its population has increased by 12.28% since the most recent census, which recorded a population of 114 in 2020.
The median age in Allamuchy is 36.5 years: 0 years for males, and 5 years for females.