Oak Brook, IL politics & representatives
Oak Brook is represented in Congress by Senators Richard J. Durbin and Tammy Duckworth and Representatives Jesús G. "Chuy" García and Sean Casten. J. B. Pritzker is governor.
Who represents Oak Brook in Washington and in Illinois, with how to reach each office.
How DuPage County voted in 2024
Official results for all of DuPage County. Oak Brook's own results aren't published in a form we can match to the town exactly, so these are the county's.
President 467,890 votes
Illinois: Harris 54.4%, Trump 43.5%
U.S. House · Illinois's 4th District 206,469 votes
Covers about 69% of Oak Brook · whole-district result
U.S. House · Illinois's 6th District 363,383 votes
Covers about 31% of Oak Brook · whole-district result
Source: MIT Election Data + Science Lab, official 2024 precinct returns (statewide totals from its official state files). Percentages are of votes for candidates; blank and spoiled ballots aren't counted.
Who represents Oak Brook in Congress
U.S. Senate Both senators represent all of Illinois
U.S. House · Illinois's 4th District Covers about 69% of Oak Brook
U.S. House · Illinois's 6th District Covers about 31% of Oak Brook
Oak Brook is split between 2 congressional districts. Find yours by ZIP code ↗
Who represents Oak Brook in state government
State Senate · District 4 Covers about 52% of Oak Brook
State Senate · District 23 Covers about 48% of Oak Brook
State House · District 7 Covers about 52% of Oak Brook
State House · District 45 Covers about 48% of Oak Brook
Oak Brook is split between state legislative districts. Find yours by address ↗
Oak Brook's own government: Town Hall →
Sources: congressional and state legislative districts from the U.S. Census Bureau (119th Congress, 2024 state districts); members of Congress from the congress-legislators project (portraits public domain); governors and state legislators from Open States. Districts are matched to Oak Brook by land area, so if the town is split, your street decides which one is yours.