Stony Brook Flag

Stony Brook

County:
Suffolk County
County Seat:
No
Area (mi²):
5.823
State:
New York

Stony Brook is a CDP located in Suffolk County, New York. Stony Brook has a 2025 population of 12,191 . Stony Brook is currently declining at a rate of -0.84% annually but its population has increased by 3.45% since the most recent census, which recorded a population of 11,785 in 2020.

The average household income in Stony Brook is $202,116 with a poverty rate of 4.35%. The median age in Stony Brook is 45.4 years: 43 years for males, and 47 years for females. For every 100 females there are 105.0 males.

12.2K
Total Population
2,094
Density (mi²)
-103 -0.84%
Growth

Stony Brook Population

Stony Brook Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Stony Brook includes 80.09% White, 11.25% Asian, 3.2% Black or African American, and smaller percentages for other race and multiracial populations.

Population by Race

White (80.09%)

Asian (11.25%)

Two or more races (4.33%)

Black or African American (3.2%)

Other race (1.13%)

Race
Population
Percentage (of total)
White10,27380.09%
Asian1,44311.25%
Two or more races5564.33%
Black or African American4103.2%
Other race1451.13%

Stony Brook Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Stony Brook's average per capita income is $94,541. Household income levels show a median of $162,054. The poverty rate stands at 4.35%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$205,341-
Families$192,925$234,697
Households$162,054$202,116
Non Families$88,611$98,606

$94,541

Average Income

$162,054

Median Household Income

4.35%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)