Illinois / IL-05
Illinois District 5
Score
Irregularity score 98 Very irregularLess compact than 100% of other congressional districts.
3rd least compact of 429 nationally, 1st 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
- 0.07at least as compact as 3% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.18at least as compact as 1% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.48at least as compact as 3% 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.
The state's edge
3% of this district's border is the state's edge: a coastline, a national border or a state line. Mapmakers don't choose those lines. A ragged one, like a coastline or a river, lowers Polsby-Popper. Reock and convex hull count only the state's own land, so water and neighboring states don't count against them. More on the state's edge
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.
- Chicago city459,463 of its 2,746,388 residents
- Arlington Heights village58,075 of its 77,676 residents
- Palatine village36,361 of its 67,908 residents
- Park Ridge city26,535 of its 39,656 residents
- Mount Prospect village22,985 of its 56,852 residents
- Lake Zurich village18,944 of its 19,759 residents
- Norridge village13,833 of its 15,251 residents
- Hoffman Estates village12,982 of its 52,530 residents
- Des Plaines city10,925 of its 60,675 residents
- Barrington villageall 10,722 residents
And 19 smaller places. 5% of this district's people live outside any city, town or named community. How places are counted
ZIP codes
37 ZIP codes have residents in this district. 35 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
- 60004 (67%)
- 60005 (77%)
- 60008 (1%)
- 60010 (66%)
- 60016 (55%)
- 60018 (5%)
- 60021 (9%)
- 60025 (14%)
- 60047 (60%)
- 60056 (40%)
- 60067 (82%)
- 60068 (67%)
- 60074 (23%)
- 60089 (6%)
- 60176 (48%)
- 60192 (63%)
- 60195 (2%)
- 60610 (53%)
- 60611 (46%)
- 60613 (61%)
- 60614 (96%)
- 60618 (31%)
- 60622 (22%)
- 60625 (46%)
- 60630 (82%)
- 60631 (74%)
- 60634 (6%)
- 60640 (13%)
- 60641 (15%)
- 60642 (22%)
- 60646
- 60647 (15%)
- 60656 (63%)
- 60657
- 60659 (39%)
- 60706 (94%)
- 60714 (12%)
These are the Census Bureau's ZIP code areas, which match residential ZIP codes closely. ZIP codes used only for PO boxes or a single organization aren't included. How ZIP codes are matched
2024 presidential vote
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.
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)
The area outlined with dashes on the map, enlarged so its smaller districts can be seen.
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