Illinois District 17

97 Very irregular

Less compact than 99% of other congressional districts.

6th least compact of 429 nationally, 3rd 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: 0.08at least as compact as 4% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 0.26at least as compact as 5% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 0.38among the least compact 1% 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

12% 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.

Rockford city130,297 of its 148,655 residents
Peoria city83,966 of its 113,150 residents
Bloomington city44,693 of its 78,680 residents
Moline cityall 42,985 residents
Normal town37,840 of its 52,736 residents
Rock Island cityall 37,108 residents
Galesburg cityall 30,052 residents
Freeport cityall 23,973 residents
East Moline cityall 21,374 residents
Sterling cityall 14,764 residents

And 117 smaller places. 13% of this district's people live outside any city, town or named community. How places are counted

2024 presidential vote

Kamala Harris 52.4%, Donald Trump 47.6%

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)