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St. Clair County, IL

The certified 2024 map, county by county — St. Clair in amber. Open it and every precinct inside is yours to model.

Model St. Clair County, precinct by precinct →

Illinois by certified 2024 presidential result · St. Clair County in amber · open the live map →

2024 president

Democratic D+7.9

Votes cast

119,655

State

Illinois

Grain

Precinct-level

Frequently asked

How did St. Clair County vote in 2024?
D+7.9 for president — 63,433 Democratic · 54,021 Republican of 119,655 votes.
Can I model St. Clair County precinct by precinct?
Yes — open the county in the simulator and every precinct inside it is editable, with real 2024 returns as the baseline. The county rolls up live into its statewide races.
What races cover St. Clair County?
Every statewide race (U.S. Senate, Governor, the executive offices) plus its U.S. House and state-legislature districts — all modelable from the same county baseline.

Every county in Illinois

AdamsAlexanderBondBooneBrownBureauCalhounCarrollCassChampaignChristianClarkClayClintonColesCookCrawfordCumberlandDe WittDeKalbDouglasDuPageEdgarEdwardsEffinghamFayetteFordFranklinFultonGallatinGreeneGrundyHamiltonHancockHardinHendersonHenryIroquoisJacksonJasperJeffersonJerseyJo DaviessJohnsonKaneKankakeeKendallKnoxLakeLaSalleLawrenceLeeLivingstonLoganMaconMacoupinMadisonMarionMarshallMasonMassacMcDonoughMcHenryMcLeanMenardMercerMonroeMontgomeryMorganMoultrieOglePeoriaPerryPiattPikePopePulaskiPutnamRandolphRichlandRock IslandSalineSangamonSchuylerScottShelbyStarkStephensonTazewellUnionVermilionWabashWarrenWashingtonWayneWhiteWhitesideWillWilliamsonWinnebagoWoodford

The races above this county

Illinois U.S. Senate · Governor · the 2026 Senate board · the 2026 House board