Winnebago County, IL — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
283,289
Male
138,817
49.0%
Female
144,472
51.0%
Median Age
39.7 yrs
Avg Household Size
2.4
Foreign Born
8.7%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher16.8%
High School or Higher37.8%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
4.9%
Disability
0.0%
Non-English Home
7.7%
Married
38.4%
Winnebago County, IL has a population of 283,289 according to 2023 Census Bureau estimates. The median age is 39.7 years. The largest racial or ethnic group is White at 69.1% of the population. 16.8% of residents hold a bachelor's degree or higher. 8.7% of residents are foreign-born.