Stony Brook, New York Population 2021

12,428
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Stony Brook is a city located in Suffolk County New York. Stony Brook has a 2020 population of 12,428. Stony Brook is currently declining at a rate of 0.00% annually and its population has decreased by -9.55% since the most recent census, which recorded a population of 13,740 in 2010. Stony Brook reached it's highest population of 13,936 in 2014.

The average household income in Stony Brook is $162,073 with a poverty rate of 5.99%. The median rental costs in recent years comes to $2,205 per month, and the median house value is $461,800. The median age in Stony Brook is 47.1 years, 41.1 years for males, and 49.3 years for females.

Stony Brook Demographics

According to the most recent ACS, the racial composition of Stony Brook was:

  • White: 86.83%
  • Asian: 9.41%
  • Black or African American: 2.25%
  • Two or more races: 1.26%
  • Other race: 0.17%
  • Native Hawaiian or Pacific Islander: 0.08%
  • Native American: 0.00%
The current population of Stony Brook, New York is 12,428 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 12,641.The last official US Census in 2010 recorded the population at 13,740.

Stony Brook, New York Population 2021

Population by Race

Race Population Percentage
White10,79186.83%
Asian1,1699.41%
Black or African American2802.25%
Two or More Races1571.26%
Some Other Race210.17%
Native Hawaiian and Other Pacific Islander100.08%
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Stony Brook Population by Race

Stony Brook Population Pyramid $2021

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Stony Brook Median Age

47.1


Total

41.1


Male

49.3


Female

Stony Brook Adults

There are 9,786 adults, (2,872 of whom are seniors) in Stony Brook.

Stony Brook Age Dependency

79.8

Age Dependency Ratio

41.5

Old Age Dependency Ratio

38.2

Child Dependency Ratio

Stony Brook Sex Ratio

Female

5,991

48.21%

Male

6,437

51.79%

Stony Brook Population by Age

Stony Brook Renter vs Owner Occupied by Household Type

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Stony Brook Household Types

Type Owner Renter
Male100%0%
Married96.2%3.8%
All91%9%
Non Family82.2%17.8%
Female81.9%18.1%

91.0%

Rate of Home Ownership

Stony Brook Households and Families

Type Count Average Size Owned
All4,4582.7891
Married2,8003.2996.2
Non Family1,1841.5682.2
Female4582.7681.9
Male163.75100

3.16

Average Family Size

2.78

Average Household Size

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Stony Brook Households by Type

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Education Attained Count Percentage
Less Than 9th Grade510.58%
9th to 12th Grade1361.54%
High School Graduate1,12012.70%
Some College8109.18%
Associates Degree92110.44%
Bachelors Degree2,75431.22%
Graduate Degree3,02834.33%
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Stony Brook Educational Attainment by Sex (over 25)

Stony Brook Educational Attainment by Race

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Race Total High School Bachelors
White7,3277,1924,738
Asian903886746
Hispanic416381233
Black14914941
Other Race2119
2+ Races212121
Islander101010

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 100.00%.

Stony Brook Educational Attainment by Race

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Name Average Male Female
Overall$68,947$89,224$53,090
Less Than 9th Grade$21,250$$14,556
High School Graduate$48,214$47,772$48,750
Some College$67,404$81,117$47,313
Bachelors Degree$53,558$79,130$45,673
Graduate Degree$100,938$126,181$76,029

$68,947

Average Earnings

$89,224

Average Male

$53,090

Average Female

Stony Brook Earnings by Educational Attainment

Stony Brook Language by Age

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Stony Brook Language

84.73% of Stony Brook residents speak only English, while 15.27% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 5.74% of the population.

Stony Brook Language

Stony Brook Poverty by Race

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Name Total In Poverty Poverty Rate
White10,1033423.39%
Asian1,16929525.24%
Black2585822.48%
Hispanic740364.86%
Multiple157106.37%
Other1915.26%

5.99%

Overall Poverty Rate

5.96%

Male Poverty Rate

6.03%

Female Poverty Rate

Poverty in Stony Brook

The race most likely to be in poverty in Stony Brook is Asian, with 25.24% below the poverty level.

The race least likely to be in poverty in Stony Brook is White, with 3.39% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.04%. Among those working part-time, it was 7.16%, and for those that did not work, the poverty rate was 15.23%.

Stony Brook Poverty

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Name Poverty
High School10.39%
Bachelors or Greater3.48%
Less Than 9th Grade2.17%
Some College1.27%

Stony Brook Poverty Rate by Education

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Rate Poverty
Male Unemployed19.61%
Female Employed4.12%
Male Employed1.01%
Female Unemployed0.00%

Stony Brook Poverty Rate by Employment Status and Sex

Stony Brook Income by Household Type

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Name Median Mean
Households$120,476$162,073
Families$146,995$187,060
Married Families$161,977-
Non Families$52,059$86,431
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Income by Household Type

Stony Brook Marital Status

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Marriage Rates

56.9%

Overall Marriage Rate

57.8%

Male Marriage Rate

55.9%

Female Marriage Rate

Stony Brook Married by Age and Sex

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Stony Brook Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Stony Brook Marital Status by Race

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Stony Brook Marital Status

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493

Number of Veterans

422

Male Veterans

71

Female Veterans

War Veterans
Vietnam133
First Gulf War114
Korea62
World War II15
Second Gulf War10

Stony Brook Veterans by War

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Age Group Veterans
75+224
35 to 54176
65 to 7486
55 to 647
18 to 34

Stony Brook Veterans by Age

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Name Veterans % of Total
White4555.41%
Black3816.17%

Stony Brook Veterans by Race

Stony Brook Veterans by Education

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5.30%

Veteran Poverty Rate

32.59%

Veteran Disability Rate

Stony Brook Veterans by Education

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65.3%

Labor Force Participation

63.4%

Employment Rate

2.6%

Unemployment Rate

Stony Brook Employment by Age

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Stony Brook Employment by Race

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Stony Brook Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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74.51%

Born in Stony Brook

86.35%

Native Born

13.65%

Foreign Born

5.44%

Non Citizen

8.21%

Naturalized

Place of Birth

86.35% of Stony Brook residents were born in the United States, with 74.51% having been born in New York. 5.44% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Stony Brook Place of Birth

Year Population Growth Annual Growth Rate
202112,4280.00%
202012,4280.00%
201912,428-213-1.68%
201812,641-667-5.01%
201713,308-129-0.96%
201613,437-452-3.25%
201513,889-47-0.34%
201413,9364773.54%
201313,4592521.91%
201213,207-696-5.01%
201113,9031631.19%
201013,7400.00%

Stony Brook Population by Year