Williamsville village, Illinois Demographics & Population 2026

Population Overview

Williamsville village is a small community located in Illinois. The total population is 1,519. It ranks as the 578th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in Williamsville village is 44.1 years. This is 13% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Williamsville village is $104,135. This is 27% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 33% higher. The poverty rate stands at 7.5%. This is 36% lower than the state poverty rate of 11.7%. The unemployment rate is 1.8%. This is 69% lower than the state rate of 5.8%. The median home value is $187,000. Housing costs are 25% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.8x, Williamsville village is one of the most affordable housing markets in the area. 86.2% of occupied housing units are owner-occupied. This homeownership rate is 29% higher than the state average of 66.8%.

Race & Ethnicity

Williamsville village has a predominantly White (non-Hispanic) population, comprising 91.5% of all residents. Black or African American residents account for 1.7%. The White (non-Hispanic) population is significantly higher than the state average (91.5% vs 58.8%). The Black or African American population (1.7%) is well below the state average of 13.6%. The Hispanic or Latino population (1.5%) is well below the state average of 18.5%. The Asian population (0.9%) is well below the state average of 5.8%.

Education

39.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 6% 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 91.7%.

Data Sources & Methodology

All demographic data for Williamsville 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.