Unified School District · IL
Mercer County School District 404
Mercer County School District 404 is a unified school district in Illinois with a community population of 7,985. The median household income is $66,630 and the median age is 41.4.
7,985
Population
22
People / sq mi
$66,630
Median Income
41.4
Median Age
Mercer County School District 404 covers 370 sq mi of land at 21.6 people per square mile.
Race & Ethnicity
| White | 94.9% |
| Black or African American | 0.0% |
| Asian | 64.1% |
| Hispanic or Latino (any race) | 0.0% |
Economy & Income
$66,630
Median Household Income
$36,896
Per Capita Income
8.8%
Poverty Rate
2.1%
Unemployment
Housing
$133,000
Median Home Value
$778
Median Rent
76.9%
Homeownership
Education Attainment
94.5%
High School+
20.8%
Bachelor's+
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State rankings
Frequently Asked Questions
Mercer County School District 404 serves a community with a population of 7,985 according to the latest Census ACS 5-Year estimates. This unified school district is located in Illinois.
The median household income in Mercer County School District 404 is $66,630, with a per capita income of $36,896. The poverty rate is 8.8%.
Mercer County School District 404 is 94.9% White, 0.0% Black or African American, 64.1% Asian, and 0.0% Hispanic or Latino, per Census ACS data.
In Mercer County School District 404, 94.5% of adults have a high school diploma or higher, and 20.8% hold a bachelor's degree or higher, per Census ACS estimates.
The median home value in Mercer County School District 404 is $133,000, with a median rent of $778. The homeownership rate is 76.9%.
More from Illinois
Data for Mercer County School District 404 from the American Community Survey 5-Year estimates. Land area from Census Gazetteer files. This is a unified school district (GEOID: 1701395).
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.
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.
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.