Central Islip, New York Population 2021

31,205
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Central Islip is a city located in Suffolk County New York. Central Islip has a 2020 population of 31,205. Central Islip is currently declining at a rate of 0.00% annually and its population has decreased by -9.42% since the most recent census, which recorded a population of 34,450 in 2010. Central Islip reached it's highest population of 36,944 in 2013.

The average household income in Central Islip is $90,344 with a poverty rate of 9.11%. The median rental costs in recent years comes to $1,690 per month, and the median house value is $275,800. The median age in Central Islip is 36 years, 33.3 years for males, and 37.7 years for females.

Central Islip Demographics

According to the most recent ACS, the racial composition of Central Islip was:

  • White: 52.61%
  • Black or African American: 25.10%
  • Other race: 15.21%
  • Asian: 3.67%
  • Two or more races: 3.25%
  • Native American: 0.16%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Central Islip, New York is 31,205 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 31,846.The last official US Census in 2010 recorded the population at 34,450.

Central Islip, New York Population 2021

Population by Race

Race Population Percentage
White16,41852.61%
Black or African American7,83325.10%
Some Other Race4,74515.21%
Asian1,1443.67%
Two or More Races1,0143.25%
American Indian and Alaska Native510.16%
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Central Islip Population by Race

Central Islip Population Pyramid $2021

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Central Islip Median Age

36


Total

33.3


Male

37.7


Female

Central Islip Adults

There are 23,865 adults, (3,141 of whom are seniors) in Central Islip.

Central Islip Age Dependency

50.6

Age Dependency Ratio

15.2

Old Age Dependency Ratio

35.4

Child Dependency Ratio

Central Islip Sex Ratio

Female

15,448

49.50%

Male

15,757

50.50%

Central Islip Population by Age

Central Islip Renter vs Owner Occupied by Household Type

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Central Islip Household Types

Type Owner Renter
Married79.9%20.1%
Male73.9%26.1%
All68.7%31.3%
Female59%41%
Non Family58.3%41.7%

68.7%

Rate of Home Ownership

Central Islip Households and Families

Type Count Average Size Owned
All9,1453.3968.7
Married3,7674.2979.9
Non Family2,7431.2158.3
Female1,8334.4459
Male8024.2573.9

4.04

Average Family Size

3.39

Average Household Size

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Central Islip Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2,63813.12%
9th to 12th Grade2,29011.39%
High School Graduate6,37831.73%
Some College3,77318.77%
Associates Degree1,4036.98%
Bachelors Degree2,31611.52%
Graduate Degree1,3066.50%
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Central Islip Educational Attainment by Sex (over 25)

Central Islip Educational Attainment by Race

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Race Total High School Bachelors
Hispanic9,0605,551736
Black5,0724,3961,260
White4,9964,3741,079
Other Race2,7601,571198
Asian968804472
2+ Races51542976
Native American504242

The highest rate of high school graduation is among white people with a rate of 87.55%.

The highest rate of bachelors degrees is among native american people with a rate of 84.00%.

Central Islip Educational Attainment by Race

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Name Average Male Female
Overall$40,826$43,142$38,630
Less Than 9th Grade$27,308$31,993$23,073
High School Graduate$35,179$36,633$33,182
Some College$42,362$48,273$40,061
Bachelors Degree$47,690$48,147$47,131
Graduate Degree$66,932$66,165$69,926

$40,826

Average Earnings

$43,142

Average Male

$38,630

Average Female

Central Islip Earnings by Educational Attainment

Central Islip Language by Age

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Central Islip Language

48.59% of Central Islip residents speak only English, while 51.41% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 43.95% of the population.

Central Islip Language

Central Islip Poverty by Race

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Name Total In Poverty Poverty Rate
Hispanic14,6501,64211.21%
White7,08674510.51%
Black7,7784686.02%
Other4,6573998.57%
Multiple993424.23%
Asian1,12360.53%

9.11%

Overall Poverty Rate

7.15%

Male Poverty Rate

11.10%

Female Poverty Rate

Poverty in Central Islip

The race most likely to be in poverty in Central Islip is Hispanic, with 11.21% below the poverty level.

The race least likely to be in poverty in Central Islip is Asian, with 0.53% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.44%. Among those working part-time, it was 10.00%, and for those that did not work, the poverty rate was 18.91%.

Central Islip Poverty

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Name Poverty
Less Than 9th Grade19.95%
High School8.64%
Some College6.03%
Bachelors or Greater3.82%

Central Islip Poverty Rate by Education

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Rate Poverty
Female Unemployed21.09%
Male Unemployed16.57%
Female Employed4.10%
Male Employed3.77%

Central Islip Poverty Rate by Employment Status and Sex

Central Islip Income by Household Type

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Name Median Mean
Households$74,458$90,344
Families$91,316$100,944
Married Families$100,392-
Non Families$36,324$54,737
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Income by Household Type

Central Islip Marital Status

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Marriage Rates

37.3%

Overall Marriage Rate

38.3%

Male Marriage Rate

36.4%

Female Marriage Rate

Central Islip Married by Age and Sex

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Central Islip Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Central Islip Marital Status by Race

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Central Islip Marital Status

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802

Number of Veterans

723

Male Veterans

79

Female Veterans

War Veterans
First Gulf War281
Vietnam200
Second Gulf War101
Korea75
World War II

Central Islip Veterans by War

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Age Group Veterans
35 to 54357
65 to 74207
75+153
55 to 6460
18 to 3425

Central Islip Veterans by Age

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Name Veterans % of Total
White5804.60%
Hispanic1511.40%
Black1322.12%
Other Race471.43%
2+ Races274.20%
Asian161.56%

Central Islip Veterans by Race

Central Islip Veterans by Education

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3.12%

Veteran Poverty Rate

19.20%

Veteran Disability Rate

Central Islip Veterans by Education

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67.8%

Labor Force Participation

65.3%

Employment Rate

3.5%

Unemployment Rate

Central Islip Employment by Age

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Central Islip Employment by Race

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Central Islip 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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53.72%

Born in Central Islip

65.06%

Native Born

34.94%

Foreign Born

18.66%

Non Citizen

16.28%

Naturalized

Place of Birth

65.06% of Central Islip residents were born in the United States, with 53.72% having been born in New York. 18.66% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Central Islip Place of Birth

Year Population Growth Annual Growth Rate
202131,2050.00%
202031,2050.00%
201931,205-641-2.01%
201831,846-1,407-4.23%
201733,253-1,471-4.24%
201634,724-236-0.68%
201534,960-1,273-3.51%
201436,233-711-1.92%
201336,9441540.42%
201236,7901520.41%
201136,6382,1886.35%
201034,4500.00%

Central Islip Population by Year