Montgomery County, Illinois Demographics 2026

Population Overview

Montgomery County is located in Illinois with a total population of 28,078. It is the 48th most populous county out of 102 in Illinois.

Age Demographics

The median age in Montgomery County is 42.6 years. This is 10% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Montgomery County is $61,863. This is 24% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 21% lower. The poverty rate stands at 13.8%. This is 18% higher than the state poverty rate of 11.7%. The unemployment rate is 5.8%. The median home value is $102,200. Housing costs are 59% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.7x, Montgomery County is one of the most affordable housing markets in the area. 76.3% of occupied housing units are owner-occupied. This homeownership rate is 14% higher than the state average of 66.8%.

Race & Ethnicity

Montgomery County has a predominantly White (non-Hispanic) population, comprising 92.0% of all residents. Black or African American residents account for 2.7%. The White (non-Hispanic) population is significantly higher than the state average (92.0% vs 58.8%). The Black or African American population (2.7%) is well below the state average of 13.6%. The Hispanic or Latino population (2.1%) is well below the state average of 18.5%. The Asian population (0.5%) is well below the state average of 5.8%.

Education

18.2% 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 90.0%.