Middlesex County, NJ — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
861,535
Male
427,818
49.7%
Female
433,717
50.3%
Median Age
39.4 yrs
Avg Household Size
2.7
Foreign Born
34.7%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher31.1%
High School or Higher47.3%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
2.5%
Disability
0.0%
Non-English Home
7.4%
Married
44.3%
Middlesex County, NJ has a population of 861,535 according to 2023 Census Bureau estimates. The median age is 39.4 years. The largest racial or ethnic group is White at 44.2% of the population. 31.1% of residents hold a bachelor's degree or higher. 34.7% of residents are foreign-born.