119th Congress · IL-4
Illinois's 4th Congressional District
Illinois's 4th Congressional District (IL-4) has a population of 733,798. The median household income is $72,717 and the median age is 36.5.
733,798
Population
7663
People / sq mi
$72,717
Median Income
36.5
Median Age
IL-4 covers 96 sq mi of land at 7663.1 people per square mile.
Race & Ethnicity
| White | 37.3% |
| Black or African American | 4.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.0% |
Economy & Income
$72,717
Median Household Income
$34,841
Per Capita Income
10.5%
Poverty Rate
4.3%
Unemployment
Housing
$272,500
Median Home Value
$1,136
Median Rent
62.7%
Homeownership
Education
76.7%
High School+
24.0%
Bachelor's+
Other Illinois Congressional Districts
Largest cities in Illinois
Largest counties in Illinois
State rankings
Frequently Asked Questions
Illinois's 4th Congressional District (IL-4) has a population of 733,798 according to the latest Census ACS 5-Year estimates. Each US Congressional District is drawn to be roughly equal in population (~760K people).
The median household income in Illinois's 4th Congressional District is $72,717, with a per capita income of $34,841.
Illinois's 4th Congressional District is 37.3% White, 4.9% Black, 0.0% Asian, and 3.0% Hispanic or Latino, per Census ACS data.
More from Illinois
Data for Illinois's 4th Congressional District (119th Congress) from the American Community Survey 5-Year estimates. Land area from the Census Gazetteer files. Congressional districts are redrawn after each decennial Census; the 119th Congress (current) uses post-2020 boundaries.
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.
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.