Long Beach
- County:
- Nassau County
- County Seat:
- No
- Area (mi²):
- 2.218
- State:
- New York
Long Beach is a city located in Nassau County, New York. Long Beach has a 2026 population of 34,777. Long Beach is currently growing at a rate of 0.24% annually but its population has decreased by -0.07% since the most recent census, which recorded a population of 34,801 in 2020.