Union County, IA
IA · Presidential Elections 1892–2024
Union County, IA (Iowa) voted R+36.1 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 4,044 votes (67.25%) to 1,874 (31.17%) for Harris.
This represents a R+4.6% swing toward Republicans compared to 2020. Union County is classified as a deep Republican county. Union County has voted Republican in every presidential election since 2016. The county has a population of approximately 11,993.
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 | 31.2%(1,874) | 67.3%(4,044) | R+36.1 | R+4.6 |
| 2020 | 33.3%(2,061) | 64.8%(4,010) | R+31.5 | R+4.3 |
| 2016 | 32.7%(1,922) | 59.9%(3,525) | R+27.2 | R+31.1 |
| 2012 | 51.1%(3,043) | 47.2%(2,813) | D+3.9 | D+0.2 |
| 2008 | 50.8%(3,000) | 47.1%(2,781) | D+3.7 | D+10.7 |
| 2004 | 46.0%(2,747) | 52.9%(3,165) | R+7.0 | D+1.1 |
| 2000 | 44.3%(2,540) | 52.3%(3,003) | R+8.1 | R+19.2 |
| 1996 | 49.3%(2,787) | 38.1%(2,156) | D+11.2 | D+5.6 |
| 1992 | 42.0%(2,565) | 36.5%(2,224) | D+5.6 | R+2.4 |
| 1988 | 53.6%(3,236) | 45.5%(2,751) | D+8.0 | D+18.8 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Union County, IA • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 31.7%(1,464) | 65.7%(3,035) | R+34.0 | R+5.1 |
| 2020 | 33.5%(2,051) | 62.4%(3,820) | R+28.9 | D+10.7 |
| 2016 | 28.1%(1,625) | 67.8%(3,913) | R+39.6 | R+15.1 |
| 2014 | 35.1%(1,504) | 59.7%(2,554) | R+24.5 | D+14.4 |
| 2010 | 29.4%(1,401) | 68.3%(3,257) | R+38.9 | R+58.3 |
| 2008 | 59.7%(3,458) | 40.3%(2,336) | D+19.4 | D+69.8 |
| 2004 | 24.0%(1,402) | 74.5%(4,347) | R+50.5 | R+64.1 |
| 2002 | 55.8%(2,467) | 42.1%(1,865) | D+13.6 | D+60.6 |
| 1998 | 26.1%(1,144) | 73.2%(3,204) | R+47.0 | R+45.1 |
| 1996 | 48.4%(2,680) | 50.4%(2,788) | R+2.0 | D+42.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 27.9%(1,278) | 69.4%(3,180) | R+41.5 | R+18.8 |
| 2018 | 37.5%(1,835) | 60.2%(2,949) | R+22.8 | D+17.0 |
| 2014 | 27.3%(569) | 67.1%(1,397) | R+39.8 | R+19.1 |
| 2010 | 37.5%(1,800) | 58.1%(2,790) | R+20.6 | R+21.4 |
| 2006 | 49.6%(1,924) | 48.8%(1,893) | D+0.8 | R+11.7 |
| 2002 | 54.6%(2,421) | 42.1%(1,866) | D+12.5 | D+19.4 |
| 1998 | 46.3%(2,153) | 53.1%(2,471) | R+6.8 | D+12.3 |
| 1994 | 39.6%(2,125) | 58.7%(3,149) | R+19.1 | D+0.3 |
| 1990 | 40.2%(1,950) | 59.5%(2,891) | R+19.4 | R+15.9 |
| 1986 | 48.3%(2,355) | 51.7%(2,523) | R+3.4 | D+6.0 |
Source: Official state election returns via MIT Election Data + Science Lab