akashic
1876–2024
Duncan, OK·Oklahoma

Duncan, OK has voted Republican in eight straight presidential elections — R+64 in 2024.

Stephens County's oil-patch hub where energy employment shapes the ballot

1876 — 2024·38 elections
OK
LatestR+64in 2024
TypologyStable Rural Rightcluster typology
Population43,5512024 ACS

Duncan, OK, Oklahoma: Stable Rural Right metro. In 2024, voted R+64%. Democratic peak: D+77 in 1932.

Key facts

2024 presidential margin
R+64MIT Election Lab
Political typology
Stable Rural RightAkashic typology
Population
43,5512024 5-year
Median household income
$61,6202024 5-year
White (non-Hispanic)
80.0%2024 5-year
Black
1.5%2024 5-year
Hispanic / Latino
8.7%2024 5-year
Peak Democratic margin
D+77 in 1932MIT Election Lab
Peak Republican margin
R+65 in 2020MIT Election Lab
2024 presidential election
Duncan, OK
TrumpR+64
—
How it voted
Share of the 2024 vote
Donald Trump ✓Republican81.1%15,092
Kamala HarrisDemocratic17.4%3,236
OtherAll other candidates1.6%292
D+60
R+60
1 counties, each filled by 2024 D-vs-R margin.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 1876 to 2024. Most recent: −63.7% in 2024.flipped R · 1996−63.7%DR18762024
Presidential margin over time
YearMargin (D minus R)
1876No data
1880No data
1884No data
1888No data
1892No data
1896No data
1900No data
1904No data
1908+33.2%
1912+35.0%
1916+42.9%
1920+15.0%
1924+31.4%
1928−26.7%
1932+76.8%
1936+58.9%
1940+34.5%
1944+38.1%
1948+55.7%
1952+10.8%
1956+8.7%
1960−7.9%
1964+27.1%
1968−1.8%
1972−46.4%
1976+15.8%
1980−16.8%
1984−33.7%
1988−11.3%
1992+2.7%
1996−5.0%
2000−25.1%
2004−42.4%
2008−52.1%
2012−53.2%
2016−62.0%
2020−65.1%
2024−63.7%
DemocraticRepublican
38 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
R
−63.7%
3,23615,09218,620
R
−65.1%
3,15415,56019,057
R
−62.0%
3,08614,18217,904
R
−53.2%
3,93912,90816,847
R
−52.1%
4,53814,39418,932
R
−42.4%
5,51513,64619,161
R
−25.1%
6,46710,86017,488
R
−5.0%
7,2488,14417,776
D
+2.7%
7,6447,08520,471
R
−11.3%
7,8339,84417,795
R
−33.7%
6,35912,87119,333
R
−16.8%
7,19110,19917,852
D
+15.8%
9,7957,09917,020
R
−46.4%
3,62310,30914,396
R
−1.8%
5,2495,50814,323
D
+27.1%
9,2725,32314,595
R
−7.9%
6,8998,08414,983
D
+8.7%
7,5246,32413,848
D
+10.8%
8,0296,46114,490
D
+55.7%
6,7021,9098,611
D
+38.1%
6,1892,7668,974
D
+34.5%
6,1492,9899,172
D
+58.9%
6,3901,6368,071
D
+76.8%
7,7061,0128,718
R
−26.7%
2,9825,1928,279
D
+31.4%
4,7452,3777,534
D
+15.0%
2,8162,0355,197
D
+42.9%
2,3436074,048
D
+35.0%
1,7355983,248
D
+33.2%
1,7617253,124
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Demographics

2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
English
13.3%
Irish
11.8%
German
9.8%
American
9.8%
Scottish
2.6%
Italian
1.5%
French
1.3%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 41.0 in this county, 39.1 nationally
Male
Age
Female
0.7%
85+
1.8%
2.8%
75–84
3.4%
5.8%
65–74
6.2%
6.6%
55–64
7.0%
5.8%
45–54
5.8%
5.9%
35–44
6.2%
5.7%
25–34
5.8%
3.9%
18–24
3.7%
8.7%
5–17
8.5%
3.0%
<5
2.7%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$61,620
Duncan, OK ranks near the middle of US counties.
Duncan, OK$61,620
Oklahoma$65,039
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
18.0%
Children face higher poverty than working-age adults.
Children under 1825.9%
Working age (18–64)16.3%
Seniors (65+)10.9%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
95.1%
speak English only
Spanish3.9%
Other Indo-European0.5%
Asian & Pacific Islander0.4%
Other languages0.1%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Baptist
39.3%
Other Christian
9.2%
Methodist
5.6%
Pentecostal & Holiness
3.6%
Mainline Protestant
3.1%
Catholic & Orthodox
2.1%
Source · 2020 US Religion Census. Remaining 37.1% of residents not counted as adherents by any reporting body.

Duncan anchors a small southwest Oklahoma metro where the petroleum industry has long defined both the economy and a reliably conservative voting pattern, with Republicans routinely carrying Stephens County by margins exceeding 40 points.

Across the recorded series it reached a Democratic high of seventy-seven points in 1932 and a Republican high of sixty-five points in 2020. Between 2020 and 2024 the metro moved one point toward the Democratic candidate; the 2024 margin was sixty-four points.

A population of 43,551, a 80% non-Hispanic-white share, and a median household income of $61,620 describe the metro.

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 →

Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Duncan, OK, Oklahoma. Akashic. https://akashic.app/cbsa/20340/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Duncan, OK, Oklahoma vote in 2024?
In 2024, Duncan, OK, Oklahoma voted Republican by 63.7 points (R+64), carried by the Republican candidate. Out of 18,620 votes cast, 3,236 went Democratic and 15,092 went Republican.
What is Duncan, OK, Oklahoma's political typology?
Akashic places Duncan, OK, Oklahoma in the "Stable Rural Right" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the metro has voted Democratic 15 times, Republican 15 times, and other 0 times.
When did Duncan, OK, Oklahoma last vote Democratic?
The most recent presidential election in which Duncan, OK, Oklahoma voted Democratic was 1992.
How many people live in Duncan, OK, Oklahoma?
Duncan, OK, Oklahoma has a population of 43,551 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Duncan, OK, Oklahoma?
Median household income in Duncan, OK, Oklahoma is $61,620 — below the national median of $80,734. The Oklahoma state median is $65,039.
What is the political history of Duncan, OK, Oklahoma?
Akashic tracks 38 presidential elections in Duncan, OK, Oklahoma from 1876 to 2024. Of those, 15 went Democratic and 15 went Republican. The metro's typology — "Stable Rural Right" — captures where that record, its demographics, and its recent swing place it among American communities.