Kendall County, Illinois Demographics 2026

Population Overview

Kendall County is located in Illinois with a total population of 135,053. It is the 15th most populous county out of 102 in Illinois.

Age Demographics

The median age in Kendall County is 36.0 years. This is 7% lower than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Kendall County is $110,474. This is 35% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 41% higher. The poverty rate stands at 4.9%. This is 59% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.6%. This is 37% lower than the state rate of 5.8%. The median home value is $298,900. Housing costs are 19% higher than the state median of $250,500. With a home-value-to-income ratio of just 2.7x, Kendall County is one of the most affordable housing markets in the area. 84.2% of occupied housing units are owner-occupied. This homeownership rate is 26% higher than the state average of 66.8%.

Race & Ethnicity

The largest racial or ethnic group in Kendall County is White (non-Hispanic), making up 63.4% of the population. Hispanic or Latino residents account for 21.7%.

Education

36.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Kendall County in the top 10% of all cities in the state for educational attainment. This is 2% 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 93.6%.