
Islandia
- County:
- Suffolk County
- County Seat:
- No
- Area (mi²):
- 2.214
- State:
- New York
Islandia is a village located in Suffolk County, New York. Islandia has a 2025 population of 3,668. Islandia is currently growing at a rate of 0.58% annually and its population has increased by 2.89% since the most recent census, which recorded a population of 3,565 in 2020.
The average household income in Islandia is $137,764 with a poverty rate of 3.36%. The median age in Islandia is 39.1 years: 38.5 years for males, and 44.2 years for females.