Illinois' 1st Congressional District
Illinois · IL-01
Illinois' 1st Congressional District is one of 17 U.S. House districts in Illinois, represented in Congress by Jonathan Jackson (Democrat). It is home to roughly 734,350 people, with a median age of 39.6. The population is about 49% Black. The median household income is $71,026, and 32% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted safely Democratic (D+32).
Representative
Current U.S. House member (source: house.gov).
Geography
IL-01 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 619 square miles, IL-01 is the 308th-largest of the 435 congressional districts by land area. With about 1,186 residents per square mile, it is a largely suburban district. Its shape is very irregular: the district's Polsby-Popper score of 0.14 ranks 370th of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 65% of IL-01 voters backed Kamala Harris and 33% Donald Trump — a D+32 margin. That is a 10.0-point shift toward the Republicans from 2020, when the district voted D+42.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 39.6 years old; 22.3% of residents are under 18 and 17% are 65 or older. About 7.1% of residents were born outside the United States, and 12.2% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $71,026, the district's median household income ranks 279th of 435 districts nationwide. The typical owner-occupied home is worth $252,815, and the median rent is $1,138 a month. 15.5% of residents live below the poverty line, and workers average a 36.7-minute commute (12.3% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).