Illinois State Senate seat · lines in effect since 2022

Illinois Legislative District 25

A district of about 241,000 people, 41% Hispanic, 35% of adults with a bachelor's degree. It votes D+18.9 relative to the nation for president.

Where it sits among all 59 seats

Every Illinois State Senate seat by partisan lean, from most Democratic to most Republican. Lean is the seat's presidential vote on current lines, relative to the nation.

D+18.926th most
Democratic
Most DemocraticMost Republican30th seat · the majority lineDistrict 25

Source: 99chambers: 2024 and 2020 presidential results on current lines, relative to the nation (2024 weighted 3:1)Updated Oct 16, 2026, 5:19 AM ET

Every race on these lines

Results recomputed from precinct returns as if today's boundaries had always existed, so years compare like for like.

201620182020
U.S. SenateD+6.7No raceD+15.2
GovernorNo raceD+6.3No race

Outlined: the race for this seat itselfBlank: no race that year

Source: 99chambers results archive: precinct results allocated to current lines; 2026: civicAPIUpdated Nov 7, 2026, 3:01 PM ET

Who lives here, compared

Grey bars show the spread of all 59 seats. Small marks are other seats in Illinois. The black marker is District 25.

Adults with a bachelor's degree35% 52nd pct · 29th of 59 in IL

Higher than 52% of seats.

White adults without a degree26% 38th pct · 37th of 59 in IL

Lower than 62% of seats.

Hispanic residents41% 90th pct · 7th of 59 in IL

Higher than 90% of seats.

Black residents5% 45th pct · 33rd of 59 in IL

Lower than 55% of seats.

Asian residents10% 74th pct · 16th of 59 in IL

Higher than 74% of seats.

People per square mile2,370 57th pct · 26th of 59 in IL

Denser than 57% of seats.

Source: Census Bureau, American Community Survey 2020–2024 5-year estimates, allocated to current linesUpdated Oct 13, 2026, 5:06 AM ET