Elementary School District · IL
Aviston School District 21
Aviston School District 21 is a elementary school district in Illinois with a community population of 3,171. The median household income is $117,250 and the median age is 34.3.
3,171
Population
157
People / sq mi
$117,250
Median Income
34.3
Median Age
Aviston School District 21 covers 20 sq mi of land at 156.7 people per square mile.
Race & Ethnicity
| White | 94.5% |
| Black or African American | 0.0% |
| Asian | 43.4% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$117,250
Median Household Income
$46,023
Per Capita Income
5.7%
Poverty Rate
1.4%
Unemployment
Housing
$264,000
Median Home Value
$968
Median Rent
84.3%
Homeownership
Education Attainment
96.3%
High School+
36.9%
Bachelor's+
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Frequently Asked Questions
Aviston School District 21 serves a community with a population of 3,171 according to the latest Census ACS 5-Year estimates. This elementary school district is located in Illinois.
The median household income in Aviston School District 21 is $117,250, with a per capita income of $46,023. The poverty rate is 5.7%.
Aviston School District 21 is 94.5% White, 0.0% Black or African American, 43.4% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Aviston School District 21, 96.3% of adults have a high school diploma or higher, and 36.9% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Aviston School District 21 is $264,000, with a median rent of $968. The homeownership rate is 84.3%.
More from Illinois
Data for Aviston School District 21 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a elementary school district (GEOID: 1704740).
The this entity record above pulls directly from the U.S. Census Bureau ACS and decennial files. What follows is the per-entity context — how this entity sits in the broader U.S. population demographics distribution and which underlying factors drive the headline numbers.
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.