In July 2017, there were 23 homes sold, with a median sale price of $370,000 - a 13.1% increase over the $327,000 median sale price for the same period of the previous year. There were 27 homes sold in Islip in July 2016.
The following table compares Islip to other Suffolk County cities with similar median sales prices in July 2017:
| City | July 2017 Home Sales | July 2016 Home Sales | % change (Total Home Sales) | July 2017 Median Sales Price | July 2016 Median Sales Price | % change (Median Sales Price) |
|---|---|---|---|---|---|---|
| Village of the Branch | 2 | 2 | 0% | $387,000 | $442,000 | -12.4% |
| West Islip | 28 | 40 | -30% | $385,500 | $355,175 | 8.5% |
| Calverton | 3 | 3 | 0% | $384,000 | $477,500 | -19.6% |
| Huntington Station | 24 | 27 | -11.1% | $378,500 | $307,500 | 23.1% |
| Center Moriches | 8 | 5 | 60% | $371,995 | $313,000 | 18.8% |
| Islip | 23 | 27 | -14.8% | $370,000 | $327,000 | 13.1% |
| Holbrook | 29 | 25 | 16% | $369,000 | $360,000 | 2.5% |
| Lindenhurst | 21 | 21 | 0% | $365,000 | $335,000 | 9% |
| Eastport | 4 | 1 | 300% | $364,460 | $335,000 | 8.8% |
| Islip Terrace | 5 | 6 | -16.7% | $363,500 | $307,500 | 18.2% |
| North Lindenhurst | 5 | 10 | -50% | $355,000 | $387,500 | -8.4% |
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