Elementary School District · IL
Center Cass School District 66
Center Cass School District 66 is a elementary school district in Illinois with a community population of 11,681. The median household income is $116,792 and the median age is 44.8.
11,681
Population
2640
People / sq mi
$116,792
Median Income
44.8
Median Age
Center Cass School District 66 covers 4 sq mi of land at 2640.4 people per square mile.
Race & Ethnicity
| White | 74.5% |
| Black or African American | 0.2% |
| Asian | 57.1% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$116,792
Median Household Income
$54,827
Per Capita Income
3.0%
Poverty Rate
2.5%
Unemployment
Housing
$443,500
Median Home Value
$1,407
Median Rent
91.0%
Homeownership
Education Attainment
94.1%
High School+
51.1%
Bachelor's+
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State rankings
Frequently Asked Questions
Center Cass School District 66 serves a community with a population of 11,681 according to the latest Census ACS 5-Year estimates. This elementary school district is located in Illinois.
The median household income in Center Cass School District 66 is $116,792, with a per capita income of $54,827. The poverty rate is 3.0%.
Center Cass School District 66 is 74.5% White, 0.2% Black or African American, 57.1% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Center Cass School District 66, 94.1% of adults have a high school diploma or higher, and 51.1% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Center Cass School District 66 is $443,500, with a median rent of $1,407. The homeownership rate is 91.0%.
More from Illinois
Data for Center Cass School District 66 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a elementary school district (GEOID: 1708970).
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.
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.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. states, metros, cities, and ZIPs with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: U.S. Census Bureau ACS, 2026.