Great River home values
Great River at a glance
- Zillow’s Home Value Index puts the typical home at $1,145,100 (Aug 2026), +25.0% over the past 12 months and +59% over five years.
- The Census median home value is $840,400 — 66% above Islip overall and 147% above the U.S. median.
- Median household income is $133,393, so homes cost 6.3× local income.
- Its ZIP ranks 1st of 14 Islip ZIP codes by home value.
Great River home value trend
Over the 12 months to Aug 2026, typical home values in Great River rose 25.0%, to about $1,145,100. That is 19.5 percentage points faster than Islip (+5.6%). Values are at or near their highest level on record in this series. Over five years the typical home gained $423,200 in value (+59%).
Year-by-year values
| Month | Typical value | Change vs year before |
|---|---|---|
| Aug 2026 | $1,145,100 | +25.0% |
| Aug 2025 | $915,800 | +11.7% |
| Aug 2024 | $820,200 | +4.0% |
| Aug 2023 | $789,000 | +0.9% |
| Aug 2022 | $782,000 | +8.3% |
| Aug 2021 | $721,900 | +14.9% |
| Aug 2020 | $628,300 | +0.2% |
| Aug 2019 | $627,200 | +15.3% |
| Aug 2018 | $544,000 | −4.9% |
| Aug 2017 | $572,000 | −0.6% |
| Aug 2016 | $575,200 | — |
Source: Zillow Home Value Index (ZHVI), typical value of mid-tier homes, smoothed & seasonally adjusted. Areas with several ZIPs: population-weighted.
Great River home value score
from local value, rent & income
In ZIP 11739, homes are expensive against local incomes.
How the Value Score is built
Computed figures
A transparent value snapshot — computed from U.S. Census ACS (2023) for this ZIP: home value, gross rent and household income. It is not a market-timing or appreciation forecast.
Great River vs Islip, New York and the U.S.
| Great River | Islip | New York | U.S. | |
|---|---|---|---|---|
| Typical value (Zillow, Aug 2026) | $1,145,100 | $696,400 | $830,400 | — |
| 1-year change | +25.0% | +5.6% | +4.2% | — |
| 5-year change | +59% | +27% | +19% | — |
| Median home value (Census) | $840,400 | $506,100 | $666,300 | $340,200 |
| Median household income | $133,393 | $129,200 | $113,700 | $78,500 |
| Price-to-income ratio | 6.3× | 3.9× | 5.9× | 4.3× |
| Mortgage payment* | $4,250/mo | $2,559/mo | $3,369/mo | $1,720/mo |
Census figures: U.S. Census Bureau ACS 5-year estimates; areas spanning several ZIPs use population-weighted averages of ZIP medians, and city/state columns cover the ZIPs of the places listed on this site. Zillow: ZHVI. *Principal & interest on the Census median value, 20% down, 6.5% fixed, 30 years.
What it costs to buy a home in Great River
At today’s typical value of $1,145,100 (Zillow, Aug 2026), a buyer putting 20% down ($229,020) and financing the rest at 6.5% over 30 years would pay about $5,790 a month in principal and interest — 52% of the median household income here. That is well above the common 28% guideline, so buying here typically takes an above-median income, a larger down payment or existing equity.
Estimate only: excludes property tax, insurance, HOA and PMI, which vary by property. Incomes and rents are the latest Census (ACS 2023) figures. Run your own numbers in the estimator below.
What this means for buyers, sellers and investors in Great River
Buyers
At 6.3× local income, this is a premium market; expect competition for the few homes at the lower end of the range. Prices rose 25.0% last year, so waiting has been costly recently.
Sellers
Values are up 25.0% on the year, so recent sales support your price — and get a home-specific estimate: condition and size move the number more than the area average.
Other neighborhoods in Islip
| Name | Home value | 1-yr | Income | Rent | Price / income |
|---|---|---|---|---|---|
| Bay Shore | $464K | +3.7% | $115K | $1,885 | 4.0× |
| Bohemia | $509K | +5.6% | $120K | $2,425 | 4.2× |
| Brentwood | — | +5.1% | — | — | — |
| Brightwaters city data | $502K | +5.3% | $116K | $2,238 | 4.3× |
| Central Islip | $407K | +6.7% | $110K | $2,094 | 3.7× |
| East Islip | $578K | +8.4% | $146K | $2,508 | 4.0× |
| Fire Island (part) | $731K | +12.8% | $101K | — | 7.2× |
| Great River | $840K | +25.0% | $133K | — | 6.3× |
| Hauppauge | $636K | +6.9% | $149K | $2,689 | 4.3× |
| Holbrook | $504K | +6.1% | $138K | $2,434 | 3.6× |
| Islip Terrace | $482K | +4.8% | $149K | $2,512 | 3.2× |
| Islip Village city data | $502K | +5.3% | $116K | $2,238 | 4.3× |
| Oakdale | $586K | +7.3% | $128K | $2,344 | 4.6× |
| Ocean Beach city data | $502K | +5.3% | $116K | $2,238 | 4.3× |
| Ronkonkoma | $465K | +5.4% | $118K | $2,103 | 4.0× |
| Saltaire city data | $502K | +5.3% | $116K | $2,238 | 4.3× |
| Sayville | $614K | +6.1% | $145K | $2,338 | 4.2× |
| West Islip | $599K | +5.0% | $171K | $2,660 | 3.5× |
| West Sayville | $572K | +5.8% | $162K | $2,519 | 3.5× |
Home value, income and rent: Census ACS medians; 1-yr: Zillow ZHVI change over 12 months. Tap a column heading to sort.
Great River real estate FAQ
Are home prices going up in Great River?
What is the typical home value in Great River?
Is Great River affordable?
What’s your Great River home worth?
Estimates are informational only and are not an appraisal.
About this data
Data last updated: September 2026.
Current values and trends use the Zillow Home Value Index (ZHVI) — the typical value of mid-tier homes, smoothed and seasonally adjusted — through Aug 2026. It is refreshed monthly.
Median values, incomes, rents, housing stock and commutes come from the U.S. Census Bureau’s American Community Survey (ACS) 5-year estimates at ZIP Code Tabulation Area level. City and state figures are population-weighted averages of their ZIPs.
The Value Score (0–10) blends gross rental yield and price-to-income affordability. It is a value snapshot, not a forecast.
Mortgage figures assume 20% down and a 6.5% fixed 30-year loan, principal and interest only.
These are area-level statistics, not an appraisal of any individual property, and not financial advice.
Sources: U.S. Census ACS · Zillow ZHVI.