Illinois District 11

90 Very irregular

Less compact than 94% of other congressional districts.

26th least compact of 429 nationally, 7th of 17 in Illinois.

A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work

The three measures

Polsby-Popper: 0.15at least as compact as 19% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 0.28at least as compact as 8% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 0.53at least as compact as 4% of districts on this measure
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.

Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.

Cities and towns

The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.

Aurora city124,248 of its 180,542 residents
Naperville city106,187 of its 149,540 residents
Bolingbrook village66,005 of its 73,922 residents
Woodridge villageall 34,158 residents
Huntley village26,988 of its 27,740 residents
Batavia city25,960 of its 26,098 residents
Woodstock cityall 25,630 residents
McHenry city24,622 of its 27,135 residents
Belvidere city23,330 of its 25,339 residents
North Aurora village18,156 of its 18,261 residents

And 47 smaller places. 12% of this district's people live outside any city, town or named community. How places are counted

2024 presidential vote

Kamala Harris 55.8%, Donald Trump 44.2%

Shares of the votes for the two of them; other candidates are left out. Illinois used the same lines in 2024, so this is added up from precinct results. A precinct split between districts is divided by its House votes, so the figures are close estimates. Where the votes come from

U.S. House

Statewide results from Illinois for the November 3, 2026 election aren't available yet.

Where this comes from

Illinois's senators

Tammy Duckworth, Democrat
Richard J. Durbin, DemocratSeat on the November 3, 2026 ballot: results aren't available yet.

Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from

Where it sits in Illinois

Very compact (0 to 19)
Compact (20 to 39)
Middle (40 to 59)
Irregular (60 to 79)
Very irregular (80 to 100)