Cumberland County, Illinois Demographics 2026

Population Overview

Cumberland County is located in Illinois with a total population of 10,378. It is the 87th most populous county out of 102 in Illinois.

Age Demographics

The median age in Cumberland County is 42.3 years. This is 9% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Cumberland County is $69,826. This is 15% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 11% lower. The poverty rate stands at 9.9%. This is 15% lower than the state poverty rate of 11.7%. The unemployment rate is 2.4%. This is 59% lower than the state rate of 5.8%. The median home value is $117,700. Housing costs are 53% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.7x, Cumberland County is one of the most affordable housing markets in the area. 83.5% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 66.8%.

Race & Ethnicity

Cumberland County has a predominantly White (non-Hispanic) population, comprising 96.0% of all residents. Hispanic or Latino residents account for 0.3%. The White (non-Hispanic) population is significantly higher than the state average (96.0% vs 58.8%). The Black or African American population (0.1%) is well below the state average of 13.6%. The Hispanic or Latino population (0.3%) is well below the state average of 18.5%. The Asian population (0.1%) is well below the state average of 5.8%.

Education

18.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 50% 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 93.9%.