| Donald Trump ✓Republican | 67.1% | 14,521 |
|---|---|---|
| Kamala HarrisDemocratic | 30.1% | 6,509 |
| OtherAll other candidates | 2.8% | 612 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −23.3% |
| 2012 | −20.2% |
| 2016 | −29.3% |
| 2020 | −28.0% |
| 2024 | −37.0% |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 30.1%Harris6,509 | 67.1%Trump14,521 | 2.8% | 21,642 | ||
| R | 34.2%Biden6,818 | 62.2%Trump12,409 | 3.6%incl. Jorgensen | 19,944 | ||
| R | 29.2%Clinton4,621 | 58.5%Trump9,258 | 12.4%incl. Johnson | 15,837 | ||
| R | 39.9%Obama5,862 | 60.1%Romney8,833 | 0.0% | 14,695 | ||
| R | 37.0%Obama4,943 | 60.3%McCain8,062 | 2.7% | 13,364 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | CaldwellCity | IdahoState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 63.5% | 81.7% | 61.0% |
| Black | 0.4% | 0.8% | 12.2% |
| Asian | 1.0% | 1.4% | 6.0% |
| Two or more races | 17.4% | 9.7% | 12.6% |
| Other race | 17.2% | 6.5% | 8.2% |
| Hispanic or Latino | 36.8% | 13.6% | 19.3% |
| Income & Age | |||
| Median household income | $73,058 | $77,800 | $84,427 |
| Poverty rate | 11.9% | 10.7% | 12.5% |
| Median age | 31.5 | 37.6 | 39.1 |
| Age 18–24 | 9.3% | 9.8% | 9.2% |
| Age 65 and older | 14.5% | 17.1% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 23.2% | 31.8% | 35.6% |
| Speaks a non-English language at home | 19.2% | 11.0% | 22.3% |
| Spanish | 16.2% | 8.1% | 13.6% |
| Russian, Polish, or other Slavic | 1.0% | 0.5% | 0.7% |
| Ancestry | |||
| Largest ancestry | English 16.0% | English 19.3% | German 12.5% |
| 2nd-largest ancestry | German 15.0% | German 16.5% | English 9.5% |
| 3rd-largest ancestry | Irish 8.3% | Irish 9.5% | Irish 9.4% |
| Religion | |||
| Catholic | 11.8%County context | 11.1% | 18.6% |
| Evangelical Protestant | 12.6%County context | 12.4% | 16.5% |
| Unaffiliated or unclaimed | 57.0%County context | 50.2% | 51.5% |
| Latter-day Saints | 16.0%County context | 22.1% | 2.0% |
ACS values are survey estimates and may include margins of error.
Religion data may be available only at county or larger geographies. Sub-county values are labeled when inherited, modeled, or contextual.
Caldwell sits in the Northern Rockies. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 37.0 points in 2024. Between 2020 and 2024 the city moved 9.0 points toward the Republican candidate; the 2024 margin was 37.0 points.
A population of 66,516, a 64% non-Hispanic-white share, and a median household income of $73,058 describe the city.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Caldwell, Idaho. Akashic. https://akashic.app/city/1612250/. Accessed May 20, 2026. License: CC BY 4.0.