Custer County, Idaho
| Donald Trump ✓Republican | 75.4% | 1,998 |
|---|---|---|
| Kamala HarrisDemocratic | 22.1% | 586 |
| Robert F Kennedy Jr.Independent | 1.2% | 33 |
| Year | Margin (D minus R) |
|---|---|
| 1892 | −36.3% |
| 1896 | +90.5% |
| 1900 | +38.2% |
| 1904 | −6.9% |
| 1908 | +6.4% |
| 1912 | +14.7% |
| 1916 | +30.2% |
| 1920 | −34.4% |
| 1924 | −15.0% |
| 1928 | −11.2% |
| 1932 | +30.6% |
| 1936 | +24.3% |
| 1940 | +8.1% |
| 1944 | +4.1% |
| 1948 | +1.0% |
| 1952 | −39.9% |
| 1956 | −20.7% |
| 1960 | +12.6% |
| 1964 | −0.4% |
| 1968 | −22.9% |
| 1972 | −49.9% |
| 1976 | −23.7% |
| 1980 | −52.6% |
| 1984 | −55.6% |
| 1988 | −33.6% |
| 1992 | −12.2% |
| 1996 | −26.5% |
| 2000 | −59.1% |
| 2004 | −51.0% |
| 2008 | −46.0% |
| 2012 | −51.6% |
| 2016 | −55.9% |
| 2020 | −54.3% |
| 2024 | −53.3% |
Custer County's sparse high-desert and mountain terrain anchors a small, stable electorate that has delivered Republican presidential margins above 50 points in recent cycles, making it among the most one-sided counties in the state.
Across the recorded series it reached a Democratic high of 90.5 points in 1896 and a Republican high of 59.1 points in 2000. Between 2020 and 2024 the county moved 1.0 points toward the Democratic candidate; the 2024 margin was 53.3 points.
A population of 4,470, a 88% non-Hispanic-white share, and a median household income of $67,574 describe the county. The county's voting pattern over the last decade is most similar to that of Modoc County and Lemhi County.
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Custer County, Idaho. Akashic. https://akashic.app/county/16037/. Accessed May 20, 2026. License: CC BY 4.0.