Decatur County, IA
IA · Presidential Elections 1892–2024
Decatur County, IA (Iowa) voted R+46.9 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 2,711 votes (72.51%) to 957 (25.6%) for Harris.
This represents a R+7.6% swing toward Republicans compared to 2020. Decatur County is classified as a deep Republican county. Decatur County has voted Republican in every presidential election since 2000. The county has a population of approximately 7,759.
Quick Stats
Demographics
Community Profile
Religious Composition
Source: Religion Census 2020Ancestry Groups
Source: Census ACSTop reported ancestry groups (compared to national average).
Age Distribution
Employment by Industry
Census ACSPresidential Elections
Presidential Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 25.6%(957) | 72.5%(2,711) | R+46.9 | R+7.6 |
| 2020 | 29.4%(1,120) | 68.7%(2,615) | R+39.3 | R+10.4 |
| 2016 | 31.7%(1,201) | 60.7%(2,296) | R+28.9 | R+24.9 |
| 2012 | 46.7%(1,791) | 50.8%(1,947) | R+4.1 | R+3.2 |
| 2008 | 48.4%(1,986) | 49.2%(2,020) | R+0.8 | D+4.9 |
| 2004 | 46.4%(1,859) | 52.1%(2,088) | R+5.7 | D+0.5 |
| 2000 | 45.1%(1,674) | 51.3%(1,903) | R+6.2 | R+21.6 |
| 1996 | 51.0%(1,846) | 35.5%(1,287) | D+15.4 | D+1.6 |
| 1992 | 46.8%(1,866) | 33.0%(1,316) | D+13.8 | R+7.9 |
| 1988 | 60.4%(2,192) | 38.8%(1,406) | D+21.7 | D+21.8 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Decatur County, IA • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 28.2%(794) | 69.1%(1,944) | R+40.9 | R+6.8 |
| 2020 | 31.2%(1,165) | 65.3%(2,439) | R+34.1 | D+5.3 |
| 2016 | 28.2%(1,037) | 67.6%(2,488) | R+39.4 | R+14.8 |
| 2014 | 33.1%(857) | 57.7%(1,496) | R+24.7 | D+13.3 |
| 2010 | 29.4%(846) | 67.4%(1,937) | R+37.9 | R+59.6 |
| 2008 | 60.8%(2,448) | 39.2%(1,577) | D+21.6 | D+73.7 |
| 2004 | 22.7%(897) | 74.7%(2,959) | R+52.1 | R+65.7 |
| 2002 | 55.5%(1,618) | 41.9%(1,222) | D+13.6 | D+63.9 |
| 1998 | 24.3%(827) | 74.6%(2,538) | R+50.3 | R+49.2 |
| 1996 | 48.9%(1,775) | 50.0%(1,813) | R+1.0 | D+41.1 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 23.3%(651) | 74.5%(2,081) | R+51.2 | R+22.0 |
| 2018 | 34.1%(1,008) | 63.3%(1,872) | R+29.2 | D+7.0 |
| 2014 | 29.3%(768) | 65.5%(1,717) | R+36.2 | R+15.2 |
| 2010 | 36.8%(1,074) | 57.8%(1,685) | R+21.0 | R+27.5 |
| 2006 | 52.3%(1,526) | 45.8%(1,335) | D+6.5 | R+0.3 |
| 2002 | 51.7%(1,520) | 44.8%(1,318) | D+6.9 | D+14.5 |
| 1998 | 45.6%(1,389) | 53.3%(1,621) | R+7.6 | R+3.8 |
| 1994 | 47.6%(1,446) | 51.4%(1,562) | R+3.8 | D+19.3 |
| 1990 | 38.1%(1,109) | 61.2%(1,783) | R+23.1 | R+17.7 |
| 1986 | 47.2%(1,517) | 52.7%(1,692) | R+5.4 | R+3.9 |
Source: Official state election returns via MIT Election Data + Science Lab