All Countries
Central Islip, NY
Full City Profile · New York · Nassau County County
3.2
/5.0
B
Good
37,751
Population
5,272/sq mi density
$110,166
Median Income
$33,129 per capita
$405,000
Home Value
$561,606 Zillow
$2,106
Median Rent
40.6% income on rent
53°F
Avg Temperature
275 sunny days/yr
22
Violent Crime/100K
356 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$110,166 median income, 3.7% unemployment
A+
Affordability
4.6 / 5.0
$405,000 home value, $2,106/mo rent
F
Safety
1.0 / 5.0
22 violent crimes/100K
C
Education
2.5 / 5.0
18.4% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+2.2%
36,944 → 37,751
over 10 years
Annual Pop. Growth
+0.22%
Compound annual growth rate
Median Income Change
+65.3%
$66,643 → $110,166
nominal, not inflation-adjusted
Annual Income Growth
+5.15%
Compound annual growth rate
Population Over Time
Total population for Central Islip across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
38,336
+585 from 2023 (37,751)
Projected Median Income 2030
$156,571
+$46,405 from 2023 ($110,166)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 36,944 | — | $66,643 | — |
| 2015 | 34,960 | -5.4% | $66,430 | -0.3% |
| 2017 | 33,253 | -4.9% | $67,804 | +2.1% |
| 2019 | 31,205 | -6.2% | $74,458 | +9.8% |
| 2021 | 36,292 | +16.3% | $89,778 | +20.6% |
| 2023 | 37,751 | +4% | $110,166 | +22.7% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.