Clinton County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
36,899
Male
19,132
51.8%
Female
17,767
48.2%
Median Age
41.4 yrs
Avg Household Size
2.4
Foreign Born
2.5%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher17.5%
High School or Higher40.4%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.0%
Disability
0.0%
Non-English Home
5.7%
Married
46.2%
Clinton County, IL has a population of 36,899 according to 2023 Census Bureau estimates. The median age is 41.4 years. The largest racial or ethnic group is White at 91.4% of the population. 17.5% of residents hold a bachelor's degree or higher. 2.5% of residents are foreign-born.