Stephenson County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
44,042
Male
21,502
48.8%
Female
22,540
51.2%
Median Age
45.2 yrs
Avg Household Size
2.2
Foreign Born
2.4%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher15.5%
High School or Higher38.3%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.5%
Disability
0.0%
Non-English Home
6.1%
Married
44.6%
Stephenson County, IL has a population of 44,042 according to 2023 Census Bureau estimates. The median age is 45.2 years. The largest racial or ethnic group is White at 82.1% of the population. 15.5% of residents hold a bachelor's degree or higher. 2.4% of residents are foreign-born.