De Witt County, Illinois Demographics 2026

Population Overview

De Witt County is located in Illinois with a total population of 15,461. It is the 70th most populous county out of 102 in Illinois.

Age Demographics

The median age in De Witt County is 44.0 years. This is 13% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in De Witt County is $64,802. This is 21% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 17% lower. The poverty rate stands at 10.1%. This is 14% lower than the state poverty rate of 11.7%. The unemployment rate is 4.8%. This is 17% lower than the state rate of 5.8%. The median home value is $124,200. Housing costs are 50% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.9x, De Witt County is one of the most affordable housing markets in the area. 76.8% of occupied housing units are owner-occupied. This homeownership rate is 15% higher than the state average of 66.8%.

Race & Ethnicity

De Witt County has a predominantly White (non-Hispanic) population, comprising 93.2% of all residents. Hispanic or Latino residents account for 3.4%. The White (non-Hispanic) population is significantly higher than the state average (93.2% vs 58.8%). The Black or African American population (1.0%) is well below the state average of 13.6%. The Hispanic or Latino population (3.4%) is well below the state average of 18.5%. The Asian population (0.2%) is well below the state average of 5.8%.

Education

21.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 43% 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 92.8%.