Union Beach
- County:
- Monmouth County
- County Seat:
- No
- Area (mi²):
- 1.782
- State:
- New Jersey
Union Beach is a borough located in Monmouth County, New Jersey. Union Beach has a 2026 population of 5,691. Union Beach is currently growing at a rate of 0.05% annually but its population has decreased by -0.25% since the most recent census, which recorded a population of 5,705 in 2020.