Islip, NY housing market
The typical Islip home is worth about $685,000, up 5.3% in a year, 30% above the New York typical home. Homes typically sell in 27 days, a little above asking.
Home values, sales, trends and how Islip compares with the towns next door — updated as new data is published.
Islip at a glance
A seller's market
Supply is tight — about 2.7 months of homes for sale at the current pace. Buyers should expect competition on well-priced homes.
Typical home value, 2016–2026
Show as a table
| January | Islip | New York |
|---|---|---|
| 2017 | $397,000 | $298,000 |
| 2018 | $411,000 | $317,000 |
| 2019 | $444,000 | $337,000 |
| 2020 | $487,000 | $353,000 |
| 2021 | $513,000 | $379,000 |
| 2022 | $575,000 | $417,000 |
| 2023 | $583,000 | $437,000 |
| 2024 | $621,000 | $458,000 |
| 2025 | $642,000 | $489,000 |
| 2026 | $669,000 | $510,000 |
| August 2026 | $685,000 | $527,000 |
Islip and its neighbors
| Town | Typical value | 1-yr change | Days on market | Median income |
|---|---|---|---|---|
| Islip | $685K | +5.3% | 27 | $130,132 |
| Brookhaven | $721K | +7% | — | $120,110 |
| Babylon | $771K | +0.6% | — | $128,108 |
| West Islip | $774K | +5% | 22 | $176,281 |
| Babylon | — | — | — | $140,820 |
| Smithtown | $829K | +7% | 23 | $152,636 |
| Bayport | $808K | +6.9% | 15 | $147,818 |
5.3 years of income
The typical Islip home costs about 5.3 years of the town's median household income, less than across New York (6.1 years).
How Islip 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.