| Donald Trump ✓Republican | 67.5% | 3,754 |
|---|---|---|
| Kamala HarrisDemocratic | 30.8% | 1,711 |
| OtherAll other candidates | 1.7% | 94 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −1.9% |
| 2012 | −16.1% |
| 2016 | −36.5% |
| 2020 | −31.2% |
| 2024 | −36.8% |
| Year | Won | Democratic | Republican | Other | Margin | Total |
|---|---|---|---|---|---|---|
| R | 30.8%Harris1,711 | 67.5%Trump3,754 | 1.7% | 5,559 | ||
| R | 33.4%Biden1,982 | 64.6%Trump3,839 | 2.1%incl. Jorgensen | 5,943 | ||
| R | 28.7%Clinton1,619 | 65.2%Trump3,674 | 6.0%incl. Johnson | 5,633 | ||
| R | 42.0%Obama2,304 | 58.0%Romney3,188 | 0.0% | 5,492 | ||
| R | 48.2%Obama2,673 | 50.1%McCain2,777 | 1.7% | 5,543 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | SpencerCity | IowaState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 92.2% | 84.2% | 61.0% |
| Black | 0.4% | 3.9% | 12.2% |
| Asian | 0.9% | 2.5% | 6.0% |
| Two or more races | 3.7% | 6.6% | 12.6% |
| Other race | 2.8% | 2.9% | 8.2% |
| Hispanic or Latino | 5.6% | 7.3% | 19.3% |
| Income & Age | |||
| Median household income | $59,667 | $75,059 | $84,427 |
| Poverty rate | 14.0% | 11.1% | 12.5% |
| Median age | 41.4 | 38.8 | 39.1 |
| Age 18–24 | 7.1% | 10.0% | 9.2% |
| Age 65 and older | 22.4% | 18.1% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 27.5% | 31.8% | 35.6% |
| Speaks a non-English language at home | 3.2% | 9.2% | 22.3% |
| Spanish | 2.3% | 4.7% | 13.6% |
| Ancestry | |||
| Largest ancestry | German 42.9% | German 30.5% | German 12.5% |
| 2nd-largest ancestry | Norwegian 11.0% | Irish 12.8% | Mexican 11.3% |
| 3rd-largest ancestry | Irish 10.1% | English 10.2% | English 9.5% |
| Religion | |||
| Catholic | 13.9%County context | 14.7% | 18.6% |
| Evangelical Protestant | 16.9%County context | 10.9% | 16.5% |
| Unaffiliated or unclaimed | 35.6%County context | 55.2% | 51.5% |
| Mainline Protestant | 30.6%County context | 15.8% | 5.2% |
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.
Spencer sits in the Corn Belt. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 36.8 points in 2024. Between 2020 and 2024 the city moved 5.5 points toward the Republican candidate; the 2024 margin was 36.8 points.
A population of 11,400, a 92% non-Hispanic-white share, and a median household income of $59,667 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 →
Spencer, Iowa. Akashic. https://akashic.app/city/1974280/. Accessed May 20, 2026. License: CC BY 4.0.