Nassau County, NY — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
1,388,138
Male
682,628
49.2%
Female
705,510
50.8%
Median Age
41.8 yrs
Avg Household Size
3.0
Foreign Born
22.9%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher34.1%
High School or Higher48.8%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
2.4%
Disability
0.0%
Non-English Home
5.5%
Married
45.3%
Nassau County, NY has a population of 1,388,138 according to 2023 Census Bureau estimates. The median age is 41.8 years. The largest racial or ethnic group is White at 59.4% of the population. 34.1% of residents hold a bachelor's degree or higher. 22.9% of residents are foreign-born.