
Belleplain
- County:
- Atlantic County
- County Seat:
- No
- Area (mi²):
- 7.339
- State:
- New Jersey
Belleplain is a CDP located in Atlantic County, New Jersey. Belleplain has a 2025 population of 429. Belleplain is currently declining at a rate of -2.72% annually and its population has decreased by -6.74% since the most recent census, which recorded a population of 460 in 2020.
The average household income in Belleplain is $94,275 with a poverty rate of 9.48%. The median age in Belleplain is 33.2 years: 41.6 years for males, and 26.5 years for females.