Stony Brook CDP, New York Demographics & Population 2026

Population Overview

Stony Brook CDP is a small city located in New York. The total population is 12,827. It ranks as the 153rd most populous out of 1,287 cities and towns in New York.

Age Demographics

The median age in Stony Brook CDP is 45.4 years. This is 15% higher than the state median of 39.6 years. 10.2% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Stony Brook CDP is $162,054. This is 92% higher than the state median of $84,578. Compared to the national median of $78,538, household income here is 106% higher. The poverty rate stands at 4.3%. This is 68% lower than the state poverty rate of 13.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.3%. This is 30% lower than the state rate of 6.2%. The median home value is $587,300. Housing costs are 46% higher than the state median of $403,000. The home-value-to-income ratio is 3.6x. 90.0% of occupied housing units are owner-occupied. This homeownership rate is 66% higher than the state average of 54.3%.

Race & Ethnicity

The largest racial or ethnic group in Stony Brook CDP is White (non-Hispanic), making up 77.9% of the population. Asian residents account for 11.3%. The Black or African American population (2.6%) is well below the state average of 13.6%. The Hispanic or Latino population (7.3%) is well below the state average of 19.6%.

Education

68.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Stony Brook CDP in the top 10% of all cities in the state for educational attainment. This is 72% higher than the state rate of 39.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 98.0%. Notably, 44.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Stony Brook CDP, New York is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against New York state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,287 Census-designated places in New York. For official data, visit data.census.gov.