Oakbrook Terrace city, Illinois Demographics & Population 2026

Population Overview

Oakbrook Terrace city is a small community located in Illinois. The total population is 2,714. It ranks as the 445th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Oakbrook Terrace city is 34.4 years. This is 12% lower than the state median of 38.9 years. Only 12.7% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Oakbrook Terrace city is $70,586. This is 14% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 10% lower. The poverty rate stands at 17.8%. This is 52% higher than the state poverty rate of 11.7%. The unemployment rate is 4.0%. This is 31% lower than the state rate of 5.8%. The median home value is $315,600. Housing costs are 26% higher than the state median of $250,500. The home-value-to-income ratio is 4.5x. 25.9% of occupied housing units are owner-occupied. This homeownership rate is 61% lower than the state average of 66.8%.

Race & Ethnicity

The largest racial or ethnic group in Oakbrook Terrace city is White (non-Hispanic), making up 54.7% of the population. Black or African American residents account for 25.7%. The Black or African American population is significantly higher than the state average (25.7% vs 13.6%).

Education

55.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Oakbrook Terrace city in the top 10% of all cities in the state for educational attainment. This is 49% higher 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 95.3%. Notably, 23.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Oakbrook Terrace city, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.