Old Mill Creek village, Illinois Demographics & Population 2026

Population Overview

Old Mill Creek village is a small community located in Illinois. The total population is 131. It ranks as the 1307th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Old Mill Creek village is 42.9 years. This is 10% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Old Mill Creek village is $71,875. This is 12% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 8% lower. The poverty rate stands at 6.1%. This is 48% lower than the state poverty rate of 11.7%. The unemployment rate is 5.4%. This is 8% lower than the state rate of 5.8%. The median home value is $525,000. Housing costs are 110% higher than the state median of $250,500. The home-value-to-income ratio of 7.3x suggests that housing affordability is a significant concern for many residents. 40.0% of occupied housing units are owner-occupied. This homeownership rate is 40% lower than the state average of 66.8%.

Race & Ethnicity

Old Mill Creek village has a predominantly White (non-Hispanic) population, comprising 86.3% of all residents. Hispanic or Latino residents account for 11.5%.

Education

72.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Old Mill Creek village in the top 10% of all cities in the state for educational attainment. This is 94% 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 94.8%. Notably, 27.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Old Mill Creek village, 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.