
Diamond Beach
- County:
- Cape May County
- County Seat:
- No
- Area (mi²):
- 0.226
- State:
- New Jersey
Diamond Beach is a CDP located in Cape May County, New Jersey. Diamond Beach has a 2025 population of 248. Diamond Beach is currently growing at a rate of 2.9% annually and its population has increased by 22.77% since the most recent census, which recorded a population of 202 in 2020.
The average household income in Diamond Beach is $115,588 with a poverty rate of 0%. The median age in Diamond Beach is 61.8 years: 61.4 years for males, and 63.5 years for females.