Watchung
- County:
- Somerset County
- County Seat:
- No
- Area (mi²):
- 6.016
- State:
- New Jersey
Watchung is a borough located in Somerset County, New Jersey. Watchung has a 2026 population of 6,606. Watchung is currently growing at a rate of 1.68% annually and its population has increased by 2.53% since the most recent census, which recorded a population of 6,443 in 2020.