Madison County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
264,631
Male
129,444
48.9%
Female
135,187
51.1%
Median Age
40.2 yrs
Avg Household Size
2.4
Foreign Born
2.2%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher21.5%
High School or Higher41.2%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
6.5%
Disability
0.0%
Non-English Home
4.4%
Married
41.6%
Madison County, IL has a population of 264,631 according to 2023 Census Bureau estimates. The median age is 40.2 years. The largest racial or ethnic group is White at 84.0% of the population. 21.5% of residents hold a bachelor's degree or higher. 2.2% of residents are foreign-born.