New Castle County, DE — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
573,030
Male
278,119
48.5%
Female
294,911
51.5%
Median Age
39.2 yrs
Avg Household Size
2.5
Foreign Born
12.3%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher27.3%
High School or Higher46.3%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.8%
Disability
0.0%
Non-English Home
5.2%
Married
38.3%
New Castle County, DE has a population of 573,030 according to 2023 Census Bureau estimates. The median age is 39.2 years. The largest racial or ethnic group is White at 56.5% of the population. 27.3% of residents hold a bachelor's degree or higher. 12.3% of residents are foreign-born.