Henderson County, Illinois Demographics 2026

Population Overview

Henderson County is located in Illinois with a total population of 6,284. It is the 92nd most populous county out of 102 in Illinois.

Age Demographics

The median age in Henderson County is 49.8 years. This is 28% higher than the state median of 38.9 years. 12.1% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Henderson County is $65,651. This is 20% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 16% lower. The poverty rate stands at 11.6%. This is 1% lower than the state poverty rate of 11.7%. The unemployment rate is 8.6%. This is 48% higher than the state rate of 5.8%. The median home value is $101,600. Housing costs are 59% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.5x, Henderson County is one of the most affordable housing markets in the area. 85.5% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 66.8%.

Race & Ethnicity

Henderson County has a predominantly White (non-Hispanic) population, comprising 94.1% of all residents. Hispanic or Latino residents account for 1.9%. The White (non-Hispanic) population is significantly higher than the state average (94.1% vs 58.8%). The Black or African American population (0.3%) is well below the state average of 13.6%. The Hispanic or Latino population (1.9%) is well below the state average of 18.5%. The Asian population (0.0%) is well below the state average of 5.8%.

Education

19.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 48% lower than the state rate of 37.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.1%.