Canyon County, Idaho
| Donald Trump ✓Republican | 72.0% | 72,755 |
|---|---|---|
| Kamala HarrisDemocratic | 25.4% | 25,669 |
| Robert F Kennedy Jr.Independent | 1.3% | 1,315 |
| Year | Margin (D minus R) |
|---|---|
| 1896 | +58.2% |
| 1900 | −1.3% |
| 1904 | −45.0% |
| 1908 | −16.7% |
| 1912 | +7.1% |
| 1916 | +10.1% |
| 1920 | −25.1% |
| 1924 | −28.7% |
| 1928 | −53.1% |
| 1932 | +14.4% |
| 1936 | +23.2% |
| 1940 | −0.8% |
| 1944 | −11.4% |
| 1948 | −9.8% |
| 1952 | −42.9% |
| 1956 | −34.5% |
| 1960 | −24.2% |
| 1964 | −11.9% |
| 1968 | −38.8% |
| 1972 | −47.5% |
| 1976 | −28.4% |
| 1980 | −42.2% |
| 1984 | −52.4% |
| 1988 | −34.6% |
| 1992 | −26.8% |
| 1996 | −30.2% |
| 2000 | −46.4% |
| 2004 | −50.6% |
| 2008 | −35.2% |
| 2012 | −37.1% |
| 2016 | −41.7% |
| 2020 | −39.7% |
| 2024 | −46.6% |
Canyon County's Treasure Valley growth has made it one of Idaho's most populous counties, yet rapid in-migration has barely dented a presidential margin that exceeded 46 points in 2024, signaling strong partisan self-sorting among arrivals.
Across the recorded series it reached a Democratic high of 58.2 points in 1896 and a Republican high of 53.1 points in 1928. Between 2020 and 2024 the county moved 6.9 points toward the Republican candidate; the 2024 margin was 46.6 points.
A population of 250,790, a 67% non-Hispanic-white share, and a median household income of $76,488 describe the county. The county's voting pattern over the last decade is most similar to that of Dawson County and Malheur County.
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Canyon County, Idaho. Akashic. https://akashic.app/county/16027/. Accessed May 20, 2026. License: CC BY 4.0.