Oak Run, Illinois Demographics & Population 2026

A note before these figures: with a population of 800, Oak Run'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

Oak Run is a small community located in Illinois, within Knox County. The total population is 800. It ranks as the 767th most populous out of 1,445 Census-designated places in Illinois.

Age Demographics

The median age in Oak Run is 60.4 years. This is 55% higher than the state median of 39.0 years.

Economy, Income & Housing

The median household income in Oak Run is $100,417. This is 20% higher than the state median of $83,390. It is also 24% higher than the national median of $80,734. The poverty rate stands at 3.3%. This is 72% 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 Oak Run, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $298,300. Housing costs are 13% higher than the state median of $263,300. The home-value-to-income ratio is 3.0x. 97.6% of occupied housing units are owner-occupied. This homeownership rate is 46% higher than the state average of 67.1%.

Race & Ethnicity

Oak Run has a predominantly White (non-Hispanic) population, comprising 99.0% of all residents. Asian residents account for 0.8%. The White (non-Hispanic) population is significantly higher than the state average (99.0% vs 58.1%). The Asian population (0.8%) is well below the state average of 5.9%.

Education

40.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 7% 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 96.5%. Notably, 18.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Oak Run, 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.