O'Fallon, MO politics & representatives
O'Fallon is represented in Congress by Senators Josh Hawley and Eric Schmitt and Representatives Robert F. Onder, Jr. and Ann Wagner. Mike Kehoe is governor.
Who represents O'Fallon in Washington and in Missouri, with how to reach each office.
How St. Charles County voted in 2024
Official results for all of St. Charles County. O'Fallon's own results aren't published in a form we can match to the town exactly, so these are the county's.
President 226,166 votes
Missouri: Trump 58.5%, Harris 40.1%
U.S. Senate 224,116 votes
Missouri: Hawley 55.6%, Kunce 41.8%
Governor 222,752 votes
Missouri: Kehoe 59.1%, Quade 38.7%
U.S. House · Missouri's 3rd District 392,463 votes
Covers about 51% of O'Fallon · whole-district result
U.S. House · Missouri's 2nd District 428,392 votes
Covers about 49% of O'Fallon · 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 O'Fallon in Congress
U.S. Senate Both senators represent all of Missouri
U.S. House · Missouri's 3rd District Covers about 51% of O'Fallon
U.S. House · Missouri's 2nd District Covers about 49% of O'Fallon
O'Fallon is split between 2 congressional districts. Find yours by ZIP code ↗
Who represents O'Fallon in state government
State Senate · District 2
State House O'Fallon is split between 5 districts
- District 10335% of O'FallonDave Hinman Republican
- District 10730% of O'FallonMark Matthiesen Republican
- District 6426% of O'FallonDeanna Self Republican
- District 1088% of O'FallonMike Costlow Republican
- District 1021% of O'FallonRichard West Republican
O'Fallon is split between state legislative districts. Find yours by address ↗
O'Fallon'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 O'Fallon by land area, so if the town is split, your street decides which one is yours.