Kenilworth, Illinois Demographics & Population 2026

Population Overview

Kenilworth is a small community located in Illinois, within Cook County. The total population is 2,503. It ranks as the 458th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Kenilworth is 40.9 years. This is 5% higher than the state median of 39.0 years. With 37.4% of the population under 18, Kenilworth has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Kenilworth is $250,000+. This is 200% higher than the state median of $83,390. It is also 210% higher than the national median of $80,734. The poverty rate stands at 2.1%. This is 82% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.0%. This is 32% lower than the state rate of 5.8%. The median home value is $1,560,300. Housing costs are 493% higher than the state median of $263,300. The home-value-to-income ratio of 6.2x suggests that housing affordability is a significant concern for many residents. 97.5% of occupied housing units are owner-occupied. This homeownership rate is 45% higher than the state average of 67.1%.

Race & Ethnicity

The largest racial or ethnic group in Kenilworth is White (non-Hispanic), making up 82.7% of the population. Hispanic or Latino residents account for 4.6%. The Black or African American population (0.2%) is well below the state average of 13.3%. The Hispanic or Latino population (4.6%) is well below the state average of 18.8%. The Asian population (2.2%) is well below the state average of 5.9%.

Education

91.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Kenilworth in the top 10% of all cities in the state for educational attainment. This is 140% higher than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.6%. Notably, 50.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Kenilworth, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.