Population Statistics for Central Islip, New York in 2024
- Total population: 38,373, male: 19,415 and female: 18,958
- Median age: 34.6 years, male: 33.4 and female: 36.1
- Median household income: $113,707
- Housing units: 10,660 total, occupied: 9,545 and vacant: 1,115
Population by Age and Gender
In Central Islip, New York, there are 5,193 males under 18 years old (26.7%), 12,425 aged 18 to 64 (64.0%), and 1,797 aged 65 and over (9.3%). Among females, 4,797 are under 18 years old (25.3%), 11,549 aged 18 to 64 (60.9%), and 2,612 aged 65 and over (13.8%).
Population Demographics by Race
Based on the latest data, the population in Central Islip, New York is 14.2% (5,464 people) White. Hispanic or Latino residents account for 63.1% (24,198 people) of the total. Black or African American alone represents 16.9% (6,486 people), while Asian alone makes up 1.8% (676 people).
Household Income
About 18.8% of all households earn under $50,000. Around 24.7% of households have incomes between $50,000 and $100,000, while 38.0% earn between $100,000 and $200,000. A small portion, 18.4%, report incomes over $200,000.
Households and Families
About 56.9% of households are married couples, while 10.8% are headed by a male householder with no spouse present. Female householders account for 21.8% of households, and 10.5% are non-family households.
Marital Status of Population
Overall, 45.2% of men and 39.8% of women are currently married. Among those who have never married, the share is 46.8% for men and 42.7% for women. Divorce rates are 10.7% among women compared to 6.8% for men, while 6.8% of women and 1.2% of men are widowed.

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