Suffolk County, New York Population 2023

1,535,691

Suffolk County, New York's estimated 2023 population is 1,535,691 with a growth rate of 0.21% in the past year according to the most recent United States census data. Suffolk County, New York is the 4th largest county in New York. The 2010 population was 1,493,350 and has seen a growth of 2.84% since that time.

Note: data after 2021 is projected based on recent change

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2023 Growth Rate
0.21% (3,257)
County Website
Suffolk County
Founded
1683
County Seat
Riverhead
2010 Population
1,493,350
Growth Since 2010
2.84% (42,341)

Suffolk County, New York Population 2023

Population by Race

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White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Suffolk County, New York Population by Race

Suffolk County, New York Population Pyramid 2023

Suffolk County, New York Median Age

41.7

Total

40.4

Male

43.2

Female

Suffolk County, New York Adults

There are 1,200,757 adults, (257,678 of whom are seniors) in Suffolk County, New York.

Suffolk County, New York Age Dependency

61.5

Age Dependency Ratio

27.3

Old Age Dependency Ratio

34.2

Child Dependency Ratio

Suffolk County, New York Sex Ratio

Female769,09150.5%
Male753,90749.5%

Suffolk County, New York Population by Age

Suffolk County, New York Renter vs Owner Occupied by Household Type

3.47

Average Family Size

2.96

Average Household Size

81.8%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Suffolk County, New York Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Suffolk County, New York Educational Attainment by Sex (over 25)

Suffolk County, New York Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 83.26%.

The highest rate of bachelors degrees is among asian people with a rate of 48.18%.

Suffolk County, New York Educational Attainment by Race

All

Male

Female

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$57,748

Average Earnings

$68,755

Average Male

$48,703

Average Female

Suffolk County, New York Earnings by Educational Attainment

Suffolk County, New York Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Suffolk County, New York Language

77.57% of Suffolk County, New York residents speak only English, while 22.43% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 14.09% of the population.

Suffolk County, New York Language

Suffolk County, New York Poverty by Race

rate

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6.63%

Overall Poverty Rate

5.71%

Male Poverty Rate

7.53%

Female Poverty Rate

Poverty in Suffolk County, New York

The race most likely to be in poverty in Suffolk County, New York is Multiple, with 15.3% below the poverty level.

The race least likely to be in poverty in Suffolk County, New York is Islander, with 2.73% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.99%. Among those working part-time, it was 6.89%, and for those that did not work, the poverty rate was 13.34%.

Suffolk County, New York Poverty

rate

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Suffolk County, New York Poverty Rate by Education

rate

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Suffolk County, New York Poverty Rate by Employment Status and Sex

Suffolk County, New York Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Suffolk County, New York Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

50.4%

Overall Marriage Rate

52.3%

Male Marriage Rate

48.6%

Female Marriage Rate

Suffolk County, New York Married by Age and Sex

male

female

Suffolk County, New York 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 45-54.

Suffolk County, New York Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Suffolk County, New York Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

56,257

Number of Veterans

53,123

Male Veterans

3,134

Female Veterans

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Suffolk County, New York Veterans by War

count

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Suffolk County, New York Veterans by Age

count

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Suffolk County, New York Veterans by Race

Suffolk County, New York Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.84%

Veteran Poverty Rate

25.27%

Veteran Disability Rate

Suffolk County, New York Veterans by Education

LaborForceParticipation

65.6%

Labor Force Participation

62.4%

Employment Rate

4.8%

Unemployment Rate

Suffolk County, New York Employment by Age

LaborForceParticipation

Suffolk County, New York Employment by Race

LaborForceParticipation

Suffolk County, New York Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

75.56%

Born in Suffolk County, New York

84.17%

Native Born

15.43%

Foreign Born

6.35%

Non Citizen

9.08%

Naturalized

Place of Birth

84.17% of Suffolk County, New York residents were born in the United States, with 75.56% having been born in New York. 6.35% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Suffolk County, New York Place of Birth

Sources