Buchanan County, Missouri
| Donald Trump ✓Republican | 63.2% | 22,606 |
|---|---|---|
| Kamala HarrisDemocratic | 35.2% | 12,598 |
| Chase OliverLibertarian | 1.0% | 352 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | +11.1% |
| 1896 | +3.4% |
| 1900 | +3.4% |
| 1904 | −5.7% |
| 1908 | +7.8% |
| 1912 | +26.7% |
| 1916 | +16.8% |
| 1920 | −3.0% |
| 1924 | −7.9% |
| 1928 | −25.6% |
| 1932 | +28.0% |
| 1936 | +28.7% |
| 1940 | +16.7% |
| 1944 | +14.1% |
| 1948 | +27.7% |
| 1952 | −5.3% |
| 1956 | −5.0% |
| 1960 | −5.1% |
| 1964 | +35.5% |
| 1968 | −0.7% |
| 1972 | −31.4% |
| 1976 | +2.9% |
| 1980 | +1.2% |
| 1984 | −12.4% |
| 1988 | +9.6% |
| 1992 | +14.2% |
| 1996 | +9.8% |
| 2000 | +1.9% |
| 2004 | −5.3% |
| 2008 | +0.1% |
| 2012 | −8.7% |
| 2016 | −25.9% |
| 2020 | −24.5% |
| 2024 | −28.0% |
| Year | Total registered |
|---|---|
| 2016 | 52,011 |
| 2018 | 51,240 |
| 2020 | 53,297 |
| 2022 | 50,200 |
| 2024 | 52,192 |
Anchored by St. Joseph, Missouri's fourth-largest city, Buchanan County has moved from a reliably competitive battleground to a consistent Republican stronghold, posting a 28-point presidential margin in 2024 despite its urban core.
Across the recorded series it reached a Democratic high of 35.5 points in 1964 and a Republican high of 31.4 points in 1972. Between 2020 and 2024 the county moved 3.5 points toward the Republican candidate; the 2024 margin was 28.0 points.
A population of 83,568, a 80% non-Hispanic-white share, and a median household income of $62,158 describe the county. The county's voting pattern over the last decade is most similar to that of Crawford County and Montgomery County.
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Buchanan County, Missouri. Akashic. https://akashic.app/county/29021/. Accessed May 20, 2026. License: CC BY 4.0.