Islandia, NY housing market
The typical Islandia home is worth about $654,000, up 8.7% in a year, 24% above the New York typical home.
Home values, sales, trends and how Islandia compares with the towns next door — updated as new data is published.
Islandia at a glance
Only 4 sales in May 2026: in a market this size, monthly medians swing a lot, so the typical value above is the steadier guide.
Typical home value, 2016–2026
Show as a table
| January | Islandia | New York |
|---|---|---|
| 2017 | $280,000 | $298,000 |
| 2018 | $300,000 | $317,000 |
| 2019 | $329,000 | $337,000 |
| 2020 | $357,000 | $353,000 |
| 2021 | $382,000 | $379,000 |
| 2022 | $438,000 | $417,000 |
| 2023 | $456,000 | $437,000 |
| 2024 | $508,000 | $458,000 |
| 2025 | $573,000 | $489,000 |
| 2026 | $629,000 | $510,000 |
| August 2026 | $654,000 | $527,000 |
Islandia and its neighbors
| Town | Typical value | 1-yr change | Days on market | Median income |
|---|---|---|---|---|
| Islandia | $654K | +8.7% | — | $116,313 |
| Central Islip | $593K | +6.6% | 39 | $113,707 |
| Hauppauge | $814K | +6.9% | 20 | $141,378 |
| Ronkonkoma | $657K | +5.4% | 20 | $121,673 |
5.6 years of income
The typical Islandia home costs about 5.6 years of the town's median household income, less than across New York (6.1 years).
How Islandia ranks on affordability →
Home value ÷ ACS median household income.
Owners, rent & taxes
U.S. Census Bureau, ACS 2020-2024.
Home values: Zillow Home Value Index (ZHVI), Zillow Research, August 2026. Sales, days on market and supply: Redfin Data Center, May 2026. Income, ownership, taxes and rent: U.S. Census Bureau, American Community Survey. Listings link to their publishers.