| Donald Trump ✓Republican | 77.0% | 6,815 |
|---|---|---|
| Kamala HarrisDemocratic | 21.2% | 1,876 |
| OtherAll other candidates | 1.9% | 165 |
| Year | Margin (D minus R) |
|---|---|
| 2008 | −49.9% |
| 2012 | −50.5% |
| 2016 | −56.0% |
| 2020 | −57.7% |
| 2024 | −55.8% |
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| R | 1,876 | 6,815 | 8,856 | ||
| R | 1,929 | 7,424 | 9,531 | ||
| R | 1,827 | 6,948 | 9,148 | ||
| R | 2,226 | 6,768 | 8,994 | ||
| R | 2,341 | 7,086 | 9,516 |
Demographics
Demographic Profile
Key indicators compared across containing geographies
| Indicator | DuncanCity | OklahomaState | United StatesNation |
|---|---|---|---|
| Race & Ethnicity | |||
| White | 77.3% | 65.2% | 61.0% |
| Black | 2.4% | 7.0% | 12.2% |
| Asian | 0.7% | 2.4% | 6.0% |
| Two or more races | 14.5% | 14.3% | 12.6% |
| Other race | 5.1% | 11.2% | 8.2% |
| Hispanic or Latino | 11.7% | 12.7% | 19.3% |
| Income & Age | |||
| Median household income | $58,054 | $65,039 | $84,427 |
| Poverty rate | 20.5% | 15.4% | 12.5% |
| Median age | 39.9 | 37.1 | 39.1 |
| Age 18–24 | 7.6% | 9.8% | 9.2% |
| Age 65 and older | 20.7% | 16.4% | 17.2% |
| Education & Language | |||
| Bachelor's degree or higher (25+) | 20.2% | 28.3% | 35.7% |
| Speaks a non-English language at home | 7.5% | 11.5% | 22.3% |
| Spanish | 6.1% | 8.1% | 13.6% |
| Ancestry | |||
| Largest ancestry | English 13.3% | German 12.0% | German 12.5% |
| 2nd-largest ancestry | Irish 11.8% | English 11.4% | English 9.5% |
| 3rd-largest ancestry | German 9.8% | Irish 9.9% | Irish 9.4% |
| Religion | |||
| Catholic | 2.1%County context | 6.9% | 18.6% |
| Evangelical Protestant | 50.6%County context | 41.7% | 16.5% |
| Unaffiliated or unclaimed | 37.2%County context | 39.1% | 51.5% |
| Mainline Protestant | 8.1%County context | 7.7% | 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.
Duncan sits in the Southern Plains. In 2024 it voted Republican.
Across the recorded series it reached a Republican high of 57.7 points in 2020. Between 2020 and 2024 the city moved 1.9 points toward the Democratic candidate; the 2024 margin was 55.8 points.
A population of 22,958, a 77% non-Hispanic-white share, and a median household income of $58,054 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 →
Duncan, Oklahoma. Akashic. https://akashic.app/city/4021900/. Accessed May 20, 2026. License: CC BY 4.0.