Unified School District · IL
Eureka Community Unit District 140
Eureka Community Unit District 140 is a unified school district in Illinois with a community population of 10,303. The median household income is $83,399 and the median age is 39.4.
10,303
Population
91
People / sq mi
$83,399
Median Income
39.4
Median Age
Eureka Community Unit District 140 covers 113 sq mi of land at 91.1 people per square mile.
Race & Ethnicity
| White | 93.2% |
| Black or African American | 0.0% |
| Asian | 59.3% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$83,399
Median Household Income
$44,414
Per Capita Income
4.5%
Poverty Rate
2.6%
Unemployment
Housing
$208,600
Median Home Value
$730
Median Rent
80.4%
Homeownership
Education Attainment
97.5%
High School+
37.0%
Bachelor's+
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Frequently Asked Questions
Eureka Community Unit District 140 serves a community with a population of 10,303 according to the latest Census ACS 5-Year estimates. This unified school district is located in Illinois.
The median household income in Eureka Community Unit District 140 is $83,399, with a per capita income of $44,414. The poverty rate is 4.5%.
Eureka Community Unit District 140 is 93.2% White, 0.0% Black or African American, 59.3% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Eureka Community Unit District 140, 97.5% of adults have a high school diploma or higher, and 37.0% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Eureka Community Unit District 140 is $208,600, with a median rent of $730. The homeownership rate is 80.4%.
More from Illinois
Data for Eureka Community Unit District 140 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 1714430).
this entity is one of the data points covered by this site’s U.S. population demographics dataset. The detail above comes directly from the U.S. Census Bureau ACS and decennial files; the context that follows situates the headline numbers against the broader distribution across U.S. states, metros, cities, and ZIPs.
The methodology behind every numeric value on this page is publicly documented on the the U.S. Census Bureau ACS and decennial files portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
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.