Jefferson County, Missouri
Latest: 2024
Safe Republican — 40 presidential elections on record
Race & ancestry
| Group | % |
|---|---|
▶White (Non-Hispanic)(13) | 88.5% |
▶Hispanic / Latino(16) | 2.6% |
▶Black / African American(7) | 1.0% |
▶Asian(6) | 1.0% |
▶Middle Eastern / North African(7) | 0.3% |
▶Native American / Alaska Native(1) | 0.2% |
Multiracial / Other | 6.7% |
Religious adherence
| Tradition | % Pop | % Adherents |
|---|---|---|
| Evangelical Protestant | 17.0% | 48.3% |
| Catholic | 14.7% | 41.8% |
| Mainline Protestant | 2.0% | 5.8% |
| Other | 1.0% | 2.8% |
| LDS (Mormon) | 0.5% | 1.5% |
| Black Protestant | 0.4% | 1.2% |
| Non-religious | 64.9% | — |
Presidential results
| Year | Result |
|---|---|
| 2024 | Trump+36.7 |
| 2020 | Trump+33.9 |
| 2016 | Trump+35.0 |
| 2012 | Romney+12.7 |
| 2008 | Obama+2.5 |
| 2004 | Bush+0.6 |
| 2000 | Gore+2.4 |
| 1996 | Clinton+12.4 |
| 1992 | Clinton+16.2 |
Jefferson, Missouri is a county that has a population of 229,458. In the 2024 presidential election, it voted Republican with a margin of R+36.7. Akashic Edge tracks 40 presidential elections here, dating back to 1868.
| Year | Dem % | Rep % | Margin | Swing |
|---|---|---|---|---|
| 2024 | 31.0% | 67.7% | R+36.7 | R+2.9 |
| 2020 | 32.2% | 66.0% | R+33.9 | D+1.2 |
| 2016 | 29.5% | 64.5% | R+35.0 | R+22.4 |
| 2012 | 42.4% | 55.1% | R+12.7 | R+15.2 |
| 2008 | 50.4% | 47.9% | D+2.5 | D+3.1 |
| 2004 | 49.4% | 50.0% | R+0.6 | R+3.0 |
| 2000 | 50.0% | 47.6% | D+2.4 | R+10.0 |
| 1996 | 48.5% | 36.1% | D+12.4 | R+3.8 |
| 1992 | 44.3% | 28.1% | D+16.2 | D+18.9 |
| 1988 | 48.5% | 51.2% | R+2.7 | D+23.9 |
| 1984 | 36.7% | 63.3% | R+26.6 | R+18.4 |
| 1980 | 43.8% | 52.0% | R+8.2 | R+23.9 |
| 1976 | 57.3% | 41.6% | D+15.7 | D+38.5 |
| 1972 | 38.6% | 61.4% | R+22.8 | R+27.7 |
| 1968 | 42.6% | 37.7% | D+4.9 | R+36.3 |
| 1964 | 70.6% | 29.4% | D+41.1 | D+27.3 |
| 1960 | 56.9% | 43.1% | D+13.8 | D+1.0 |
| 1956 | 56.4% | 43.6% | D+12.8 | R+1.4 |
| 1952 | 57.1% | 42.8% | D+14.3 | R+11.3 |
| 1948 | 62.5% | 37.0% | D+25.5 | — |
What defines Jefferson?
Jefferson has been won by both parties in the last 6 presidential elections (1D, 5R) — a genuine swing geography.
County in State Context
Ask the Historian
Explore this county's political evolution with the Historian
Key Insights
High-confidence patterns distilled from this geography's election history.
- Latest election (2024) was a Republican landslide with a 36.7% margin
- Won by both parties in recent history — Democrats most recently in 2008, Republicans in 2024
- Highly elastic — margins have ranged 39.3 points across recent elections, suggesting a volatile electorate
Located In
Jefferson sits inside these higher-level geographies.