Custer Park, Illinois Demographics & Population 2026

A note before these figures: with a population of 459, Custer Park's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Custer Park is a small community located in Illinois, within Will County. The total population is 459. It ranks as the 962nd most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Custer Park is 28.8 years. This is 26% lower than the state median of 39.0 years. With 32.2% of the population under 18, Custer Park has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Custer Park is $178,602. This is 114% higher than the state median of $83,390. It is also 121% higher than the national median of $80,734. The poverty rate stands at 3.7%. This is 69% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Custer Park, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $175,000. Housing costs are 34% lower than the state median of $263,300. With a home-value-to-income ratio of just 1.0x, Custer Park is one of the most affordable housing markets in the area. 25.5% of occupied housing units are owner-occupied. This homeownership rate is 62% lower than the state average of 67.1%.

Race & Ethnicity

The largest racial or ethnic group in Custer Park is White (non-Hispanic), making up 80.4% of the population. Hispanic or Latino residents account for 19.6%.

Education

5.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 86% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.

Data Sources & Methodology

All demographic data for Custer Park, 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.