Duncanville, Texas
Presidential margin, 2004–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 2004 | −13.1% |
| 2008 | +9.2% |
| 2012 | +15.5% |
| 2016 | +24.8% |
| 2020 | +33.5% |
| 2024 | +26.2% |
| Year | Won | Democratic | Republican | Other | Margin | Swing | vs U.S. | Total |
|---|---|---|---|---|---|---|---|---|
| D | 62.3%Harris8,811 | 36.1%Trump5,105 | 1.6% | D+26.2 | R+7.3 | D+27.7 | 14,136 | |
| D | 66.3%Biden10,597 | 32.8%Trump5,239 | 1.0% | D+33.5 | D+8.7 | D+29.1 | 15,992 | |
| D | 60.9%Clinton8,577 | 36.0%Trump5,077 | 3.1% | D+24.8 | D+9.3 | D+22.7 | 14,091 | |
| D | 57.0%Obama8,197 | 41.5%Romney5,969 | 1.4% | D+15.5 | D+6.3 | D+11.6 | 14,373 | |
| D | 54.5%Obama8,121 | 45.2%McCain6,743 | 0.3% | D+9.2 | D+22.3 | D+2.0 | 14,914 | |
| R | 43.1%Kerry6,451 | 56.1%Bush8,410 | 0.8% | R+13.1 | — | R+10.6 | 14,981 |
Duncanville, a southwestern Dallas County suburb of roughly 40,000, has shifted notably as its population became majority-minority over two decades, making it a useful bellwether for tracking demographic-driven realignment in inner-ring Texas suburbs.
Across the recorded series it reached a Democratic high of 33.5 points in 2020 and a Republican high of 13.1 points in 2004. Between 2020 and 2024 the city moved 7.3 points toward the Republican candidate; the 2024 margin was 26.2 points.
A population of 39,683, a 23% non-Hispanic-white share, and a median household income of $76,457 describe the city. The city's voting pattern over the last decade is most similar to that of Monrovia and Converse.
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Duncanville, Texas. Akashic. https://akashic.app/city/4821628/. Accessed May 20, 2026. License: CC BY 4.0.