Sioux County, IA
IA · Presidential Elections 1892–2024
Sioux County, IA (Iowa) voted R+70.7 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 16,053 votes (84.49%) to 2,626 (13.82%) for Harris.
This represents a R+4.2% swing toward Republicans compared to 2020. Sioux County is classified as a deep Republican county. Sioux County has voted Republican in every presidential election since 1940. The county has a population of approximately 36,212.
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 | 13.8%(2,626) | 84.5%(16,053) | R+70.7 | R+4.2 |
| 2020 | 15.8%(3,019) | 82.3%(15,680) | R+66.5 | D+1.6 |
| 2016 | 12.6%(2,300) | 80.7%(14,785) | R+68.1 | R+0.5 |
| 2012 | 15.6%(2,700) | 83.2%(14,407) | R+67.6 | R+4.9 |
| 2008 | 18.2%(3,030) | 81.0%(13,490) | R+62.8 | D+9.5 |
| 2004 | 13.6%(2,259) | 85.9%(14,229) | R+72.2 | R+3.5 |
| 2000 | 14.6%(2,148) | 83.3%(12,241) | R+68.7 | R+8.7 |
| 1996 | 16.9%(2,392) | 77.0%(10,864) | R+60.0 | R+2.9 |
| 1992 | 15.1%(2,226) | 72.2%(10,637) | R+57.1 | R+1.8 |
| 1988 | 22.0%(2,923) | 77.3%(10,270) | R+55.3 | D+8.2 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
Sioux County, IA • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 11.9%(1,694) | 86.8%(12,398) | R+74.9 | R+6.3 |
| 2020 | 15.0%(2,828) | 83.6%(15,785) | R+68.6 | D+10.5 |
| 2016 | 9.5%(1,709) | 88.7%(15,902) | R+79.1 | R+3.3 |
| 2014 | 11.0%(1,475) | 86.9%(11,611) | R+75.9 | D+7.9 |
| 2010 | 7.6%(973) | 91.3%(11,677) | R+83.7 | R+36.6 |
| 2008 | 26.4%(4,291) | 73.6%(11,945) | R+47.1 | D+37.6 |
| 2004 | 7.4%(1,166) | 92.2%(14,437) | R+84.7 | R+22.8 |
| 2002 | 18.8%(2,103) | 80.7%(9,045) | R+61.9 | D+20.1 |
| 1998 | 8.9%(880) | 90.9%(9,017) | R+82.0 | R+15.5 |
| 1996 | 16.5%(2,259) | 83.0%(11,358) | R+66.5 | D+16.6 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2022 | 9.0%(1,280) | 90.1%(12,790) | R+81.1 | R+8.3 |
| 2018 | 13.1%(1,955) | 85.9%(12,840) | R+72.8 | D+10.7 |
| 2014 | 7.5%(1,013) | 91.1%(12,236) | R+83.6 | R+6.8 |
| 2010 | 10.8%(1,385) | 87.6%(11,238) | R+76.8 | R+5.1 |
| 2006 | 13.8%(1,657) | 85.6%(10,251) | R+71.7 | R+8.9 |
| 2002 | 18.2%(2,043) | 81.0%(9,110) | R+62.8 | D+3.5 |
| 1998 | 16.5%(1,651) | 82.9%(8,302) | R+66.4 | D+6.2 |
| 1994 | 13.5%(1,477) | 86.1%(9,429) | R+72.6 | D+1.4 |
| 1990 | 12.9%(1,381) | 86.9%(9,316) | R+74.0 | R+19.6 |
| 1986 | 22.8%(2,352) | 77.2%(7,955) | R+54.4 | D+3.1 |
Source: Official state election returns via MIT Election Data + Science Lab