Monmouth Beach
- County:
- Monmouth County
- County Seat:
- No
- Area (mi²):
- 1.042
- State:
- New Jersey
Monmouth Beach is a borough located in Monmouth County, New Jersey. Monmouth Beach has a 2026 population of 3,218. Monmouth Beach is currently growing at a rate of 0.22% annually and its population has increased by 1.35% since the most recent census, which recorded a population of 3,175 in 2020.