Unified School District · IL
Williamsville Community Unit School District 15
Williamsville Community Unit School District 15 is a unified school district in Illinois with a community population of 7,650. The median household income is $135,603 and the median age is 43.4.
7,650
Population
110
People / sq mi
$135,603
Median Income
43.4
Median Age
Williamsville Community Unit School District 15 covers 70 sq mi of land at 109.6 people per square mile.
Race & Ethnicity
| White | 91.4% |
| Black or African American | 0.0% |
| Asian | 58.3% |
| Hispanic or Latino (any race) | 0.1% |
Economy & Income
$135,603
Median Household Income
$59,476
Per Capita Income
2.4%
Poverty Rate
1.1%
Unemployment
Housing
$285,000
Median Home Value
$1,471
Median Rent
91.7%
Homeownership
Education Attainment
97.0%
High School+
49.5%
Bachelor's+
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Frequently Asked Questions
Williamsville Community Unit School District 15 serves a community with a population of 7,650 according to the latest Census ACS 5-Year estimates. This unified school district is located in Illinois.
The median household income in Williamsville Community Unit School District 15 is $135,603, with a per capita income of $59,476. The poverty rate is 2.4%.
Williamsville Community Unit School District 15 is 91.4% White, 0.0% Black or African American, 58.3% Asian, and 0.1% Hispanic or Latino, per Census ACS data.
In Williamsville Community Unit School District 15, 97.0% of adults have a high school diploma or higher, and 49.5% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Williamsville Community Unit School District 15 is $285,000, with a median rent of $1,471. The homeownership rate is 91.7%.
More from Illinois
Data for Williamsville Community Unit School District 15 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 1742480).
For this entity, the underlying data on this page comes from the U.S. Census Bureau ACS and decennial files. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
Every number on this page links back to the U.S. Census Bureau ACS and decennial files; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for this entity’s peers within U.S. states, metros, cities, and ZIPs. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Source: U.S. Census Bureau ACS, 2026.