electionsmcp

electionsmcp › Iowa counties › Decatur

Decatur County, IA

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

Model Decatur County, precinct by precinct →

Iowa by certified 2024 presidential result · Decatur County in amber · open the live map →

2024 president

Republican R+47.1

Votes cast

3,727

State

Iowa

Grain

Precinct-level

Frequently asked

How did Decatur County vote in 2024?
R+47.1 for president — 957 Democratic · 2,711 Republican of 3,727 votes.
Can I model Decatur 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 Decatur 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 Iowa

AdairAdamsAllamakeeAppanooseAudubonBentonBlack HawkBooneBremerBuchananBuena VistaButlerCalhounCarrollCassCedarCerro GordoCherokeeChickasawClarkeClayClaytonClintonCrawfordDallasDavisDelawareDes MoinesDickinsonDubuqueEmmetFayetteFloydFranklinFremontGreeneGrundyGuthrieHamiltonHancockHardinHarrisonHenryHowardHumboldtIdaIowaJacksonJasperJeffersonJohnsonJonesKeokukKossuthLeeLinnLouisaLucasLyonMadisonMahaskaMarionMarshallMillsMitchellMononaMonroeMontgomeryMuscatineO'BrienOsceolaPagePalo AltoPlymouthPocahontasPolkPottawattamiePoweshiekRinggoldSacScottShelbySiouxStoryTamaTaylorUnionVan BurenWapelloWarrenWashingtonWayneWebsterWinnebagoWinneshiekWoodburyWorthWright

The races above this county

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