119th Congress · IL-9
Illinois's 9th Congressional District
Illinois's 9th Congressional District (IL-9) has a population of 743,003. The median household income is $90,983 and the median age is 40.5.
743,003
Population
4430
People / sq mi
$90,983
Median Income
40.5
Median Age
IL-9 covers 168 sq mi of land at 4429.7 people per square mile.
Race & Ethnicity
| White | 62.8% |
| Black or African American | 8.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.3% |
Economy & Income
$90,983
Median Household Income
$54,541
Per Capita Income
6.5%
Poverty Rate
3.6%
Unemployment
Housing
$378,700
Median Home Value
$1,427
Median Rent
60.8%
Homeownership
Education
92.6%
High School+
55.3%
Bachelor's+
Other Illinois Congressional Districts
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Frequently Asked Questions
Illinois's 9th Congressional District (IL-9) has a population of 743,003 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 9th Congressional District is $90,983, with a per capita income of $54,541.
Illinois's 9th Congressional District is 62.8% White, 8.9% Black, 0.0% Asian, and 1.3% Hispanic or Latino, per Census ACS data.
More from Illinois
Data for Illinois's 9th 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.
Illinois's 9th Congressional District is defined demographically by education — 55.3% of adults hold a bachelor’s degree, above the national average. Illinois's 9th Congressional District is a congressional district in Illinois with a population of 743,003.
The typical household earns $90,983 a year, above the US median of $78,538. Only 6.5% of residents live in poverty, below the national 12.4%. Homes carry a median value of $378,700, with typical rent around $1,427.
The population is unusually well-credentialed for US congressional districts — 55.3% of adults have a four-year degree, above the national 35.0%.
The education numbers are the throughline: a college-heavy population in Illinois's 9th Congressional District usually coincides with higher incomes and a workforce concentrated in professional and information industries.
Source: U.S. Census Bureau ACS, 2026.