Illinois' 11th Congressional District
Illinois · IL-11
Illinois' 11th Congressional District is one of 17 U.S. House districts in Illinois, represented in Congress by Bill Foster (Democrat). It is home to roughly 770,660 people, with a median age of 39.4. The population is about 64% White. The median household income is $107,543, and 45% of adults 25 and older hold a bachelor’s degree or higher. In the 2024 presidential election it voted leaning Democratic (D+11).
Representative
Current U.S. House member (source: house.gov).
Geography
IL-11 is shown in red. Click a neighboring district to open it, or zoom out to explore the country.
Covering 926 square miles, IL-11 is the 282nd-largest of the 435 congressional districts by land area. With about 832 residents per square mile, it is a largely suburban district. Its shape is very irregular: the district's Polsby-Popper score of 0.16 ranks 360th of 435 nationally, where 1st is the most compact.
Presidential results
In the 2024 presidential election, 55% of IL-11 voters backed Kamala Harris and 44% Donald Trump — a D+11 margin. That is a 4.0-point shift toward the Republicans from 2020, when the district voted D+15.
Two-party presidential vote by district (source: The Downballot).
Who lives here
The median resident of the district is 39.4 years old; 23.7% of residents are under 18 and 15.6% are 65 or older. About 15.9% of residents were born outside the United States, and 24.7% speak a language other than English at home.
U.S. Census Bureau, American Community Survey (5-year estimates).
Economy & education
At $107,543, the district's median household income ranks 53rd of 435 districts nationwide. The typical owner-occupied home is worth $327,176, and the median rent is $1,597 a month. 6.9% of residents live below the poverty line, and workers average a 31.7-minute commute (17% work from home).
U.S. Census Bureau, American Community Survey (5-year estimates).