Suffolk County, NY — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
1,525,680
Male
756,551
49.6%
Female
769,129
50.4%
Median Age
41.7 yrs
Avg Household Size
2.9
Foreign Born
16.6%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher28.0%
High School or Higher45.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
3.4%
Disability
0.0%
Non-English Home
6.7%
Married
43.1%
Suffolk County, NY has a population of 1,525,680 according to 2023 Census Bureau estimates. The median age is 41.7 years. The largest racial or ethnic group is White at 68.9% of the population. 28.0% of residents hold a bachelor's degree or higher. 16.6% of residents are foreign-born.