St. Charles County, MO
MO · Presidential Elections 1892–2024
St. Charles County, MO (Missouri) voted R+16.9 for Donald Trump (Republican) in the 2024 presidential election, with Trump receiving 130,588 votes (57.42%) to 92,226 (40.56%) for Harris.
This represents a D+0.6% swing toward Democrats compared to 2020. St. Charles County is classified as a solid Republican county. St. Charles County has voted Republican in every presidential election since 1968. The county has a population of approximately 414,535.
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 | 40.6%(92,226) | 57.4%(130,588) | R+16.9 | D+0.6 |
| 2020 | 40.2%(89,530) | 57.7%(128,389) | R+17.5 | D+8.6 |
| 2016 | 33.8%(68,626) | 59.9%(121,650) | R+26.1 | R+5.2 |
| 2012 | 38.5%(71,838) | 59.4%(110,784) | R+20.9 | R+11.2 |
| 2008 | 44.6%(84,183) | 54.4%(102,550) | R+9.7 | D+8.0 |
| 2004 | 40.9%(66,855) | 58.6%(95,826) | R+17.7 | R+3.5 |
| 2000 | 41.8%(53,806) | 56.0%(72,114) | R+14.2 | R+8.0 |
| 1996 | 40.5%(41,369) | 46.7%(47,705) | R+6.2 | R+4.9 |
| 1992 | 35.0%(37,263) | 36.3%(38,673) | R+1.3 | D+24.7 |
| 1988 | 36.8%(29,286) | 62.9%(50,005) | R+26.1 | D+20.1 |
Source: Official state election returns via MIT Election Data + Science Lab
Presidential Margin Trend
St. Charles County, MO • 1892–2024
Senate Elections
Senate Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 43.4%(97,175) | 54.2%(121,368) | R+10.8 | D+2.1 |
| 2022 | 43.6%(64,298) | 56.4%(83,330) | R+12.9 | R+4.3 |
| 2018 | 44.3%(77,973) | 52.9%(93,172) | R+8.6 | R+0.8 |
| 2016 | 44.0%(88,238) | 51.8%(103,946) | R+7.8 | R+12.0 |
| 2012 | 49.1%(90,040) | 44.9%(82,319) | D+4.2 | D+28.1 |
| 2010 | 35.3%(43,960) | 59.2%(73,697) | R+23.9 | R+14.6 |
| 2006 | 44.4%(59,408) | 53.6%(71,771) | R+9.2 | D+11.7 |
| 2004 | 39.0%(63,545) | 60.0%(97,631) | R+20.9 | R+5.2 |
| 2002 | 41.5%(43,917) | 57.3%(60,528) | R+15.7 | R+4.7 |
| 2000 | 43.9%(56,226) | 55.0%(70,396) | R+11.1 | D+3.2 |
Source: Official state election returns via MIT Election Data + Science Lab
Governor Elections
Governor Results
| Year | Democrat | Republican | Margin | Swing |
|---|---|---|---|---|
| 2024 | 38.4%(85,628) | 59.5%(132,563) | R+21.1 | R+2.8 |
| 2020 | 39.8%(87,888) | 58.1%(128,230) | R+18.3 | R+6.3 |
| 2016 | 42.6%(85,704) | 54.5%(109,741) | R+11.9 | R+12.3 |
| 2012 | 49.0%(89,860) | 48.6%(89,144) | D+0.4 | R+8.9 |
| 2008 | 53.8%(99,705) | 44.5%(82,440) | D+9.3 | D+22.3 |
| 2004 | 43.0%(70,184) | 55.9%(91,323) | R+12.9 | D+5.8 |
| 2000 | 39.5%(50,415) | 58.2%(74,357) | R+18.8 | R+17.3 |
| 1996 | 48.0%(46,462) | 49.5%(47,886) | R+1.5 | R+12.4 |
| 1992 | 55.5%(58,012) | 44.5%(46,585) | D+10.9 | D+58.0 |
| 1988 | 26.0%(20,793) | 73.1%(58,376) | R+47.1 | R+21.1 |
Source: Official state election returns via MIT Election Data + Science Lab