Calhoun County, Illinois Demographics 2026

Population Overview

Calhoun County is located in Illinois with a total population of 4,406. It is the 100th most populous county out of 102 in Illinois.

Age Demographics

The median age in Calhoun County is 48.5 years. This is 25% higher than the state median of 38.9 years. 11.0% 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 Calhoun County is $92,095. This is 13% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 17% higher. The poverty rate stands at 5.8%. This is 50% lower than the state poverty rate of 11.7%. The unemployment rate is 3.7%. This is 36% lower than the state rate of 5.8%. The median home value is $174,000. Housing costs are 31% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.9x, Calhoun County is one of the most affordable housing markets in the area. 89.1% of occupied housing units are owner-occupied. This homeownership rate is 33% higher than the state average of 66.8%.

Race & Ethnicity

Calhoun County has a predominantly White (non-Hispanic) population, comprising 94.8% of all residents. Black or African American residents account for 1.0%. The White (non-Hispanic) population is significantly higher than the state average (94.8% 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 (0.9%) is well below the state average of 18.5%. The Asian population (0.0%) is well below the state average of 5.8%.

Education

18.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 51% 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 93.4%.