Oak Beach
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 1.143
- State:
- New York
Oak Beach is a CDP located in Suffolk County, New York. Oak Beach has a 2025 population of 154. Oak Beach is currently growing at a rate of 6.94% annually and its population has increased by 49.51% since the most recent census, which recorded a population of 103 in 2020.
The median age in Oak Beach is 66.1 years: 77.1 years for males, and 0 years for females.