Illinois District 8

89 Very irregular

Less compact than 94% of other congressional districts.

28th least compact of 429 nationally, 9th 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: 0.11at least as compact as 11% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 0.31at least as compact as 12% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 0.59at least as compact as 9% 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.

Elgin city91,055 of its 114,797 residents
Schaumburg villageall 78,723 residents
Des Plaines city46,743 of its 60,675 residents
Hoffman Estates village39,548 of its 52,530 residents
Carol Stream village38,881 of its 39,854 residents
Carpentersville villageall 37,983 residents
Elk Grove Village village32,034 of its 32,812 residents
Streamwood village31,637 of its 39,577 residents
Palatine village31,547 of its 67,908 residents
Hanover Park village27,299 of its 37,470 residents

And 32 smaller places. 5% of this district's people live outside any city, town or named community. How places are counted

ZIP codes

47 ZIP codes have residents in this district. 34 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.

Show all 47 ZIP codes

60004 (7%)
60005 (19%)
60007 (97%)
60008 (99%)
60010 (12%)
60016 (45%)
60018 (71%)
60056 (27%)
60067 (18%)
60074 (77%)
60101 (29%)
60102 (27%)
60103 (34%)
60107 (80%)
60108
60110
60118
60120 (63%)
60123
60124 (65%)
60133 (73%)
60134 (19%)
60136
60137 (1%)
60139 (45%)
60140 (55%)
60142 (4%)
60143
60157
60169
60172
60173
60174 (55%)
60175 (39%)
60177
60184 (35%)
60185 (1%)
60188 (92%)
60191 (64%)
60192 (37%)
60193
60194
60195 (98%)
60510 (1%)
60631 (2%)
60656 (37%)
60706 (6%)

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

Kamala Harris 53.5%, Donald Trump 46.5%

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)

The area outlined with dashes on the map, enlarged so its smaller districts can be seen.

Chicago area, enlarged 6 times

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