Stony Brook, New York Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Stony Brook, New York is 12,827 as of the 2023 American Community Survey, making it the 153rd-largest city in New York. The median household income is $162,054, the median home value is $587,300, and the median age is 45.4.
12,827
Population
2203
People / sq mi
$162,054
Median Income
$587,300
Median Home Value
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Stony Brook covers 5.8 sq mi of land at 2203 people per square mile.
About Stony Brook, NY
The poverty rate is what most separates Stony Brook from the typical city: 1.1% of residents live below the federal poverty line, against 12.4% nationally. Stony Brook is a city in New York with a population of 12,827.
Households here are among the highest-earning of all US cities: median income is $162,054, above the US median of $78,538. Hardship is rare relative to US cities: a poverty rate of just 1.1%, below the national 12.4%. Home values run above average at $587,300, with typical rent around $2,643.
Degree attainment is near the top of the range for US cities: 68.1% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Remote work is on the higher side at 16.6%, above the national 14.0%, and the average commute runs about 32 minutes each way.
Race & Ethnicity
| White | 80.1% |
| Black or African American | 3.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Economy & Income
$162,054
Median Household Income
$72,519
Per Capita Income
1.1%
Poverty Rate
2.8%
Unemployment Rate
Housing
$587,300
Median Home Value
$2,643
Median Rent
90.0%
Owner-Occupied
Education
98.0%
High School+
68.1%
Bachelor's+
Commute
4.4%
Drive Alone
71.0%
Public Transit
16.6%
Work From Home
31.9 min
Avg Commute
Community Profile
11.1%
Foreign Born
81.2%
Non-English at Home
3.3%
Veterans
8.3%
With Disability
99.1%
Health Insurance
95.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 44.2% |
| Finance, Insurance & Real Estate | 13.8% |
| Education, Health Care & Social Services | 5.6% |
| Construction | 5.2% |
| Information | 5.2% |
| Public Administration | 4.7% |
| Manufacturing | 3.7% |
| Retail Trade | 3.0% |
| Arts, Entertainment & Food Services | 1.9% |
| Transportation & Warehousing | 1.5% |
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Frequently Asked Questions
Stony Brook, New York has a population of 12,827 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 153rd-largest city in New York.
The median household income in Stony Brook, New York is $162,054, with 1.1% of residents living below the federal poverty level.
The median home value in Stony Brook, New York is $587,300, with median monthly rent at $2,643 and a homeownership rate of 90.0%.
The median age in Stony Brook, New York is 45.4 years. The population is 51.2% male and 48.8% female.
Stony Brook Cdp, NY Climate
Stony Brook Cdp, NY has an average annual temperature of 11.2°C (52°F) and receives about 1084 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.2°C
Avg Temp
1084
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 31° | 92 mm |
| February | 0° / 32° | 77 mm |
| March | 4° / 40° | 102 mm |
| April | 10° / 49° | 101 mm |
| May | 15° / 59° | 93 mm |
| June | 20° / 68° | 82 mm |
| July | 23° / 73° | 80 mm |
| August | 23° / 73° | 96 mm |
| September | 19° / 65° | 85 mm |
| October | 13° / 55° | 85 mm |
| November | 8° / 46° | 97 mm |
| December | 2° / 36° | 94 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Stony Brook Cdp, NY
The most comfortable months to visit Stony Brook Cdp, NY are typically June, July and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 28°C high). The coldest is January (near -5°C low). March is usually the wettest month.
Where to stay near Stony Brook
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.