Duncan, Oklahoma Demographics & Population 2026
During the 2020–2024 ACS period, Duncan, Oklahoma had a total population of 22,958, the 20th largest city in Oklahoma, with a median household income of $58,054, which is 11% lower than the state average. The poverty rate is 20.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.3x.
Duncan Quick Facts
How Duncan Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 22,872 | 22,958 | +0.4% |
| Median household income | $57,020 | $58,054 | +1.8% |
| Median home value | $125,800 | $131,500 | +4.5% |
How Duncan Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 58 | National average: 61
Education
Educational Attainment (Adults 25+)
Duncan Rankings in Oklahoma
Explore Oklahoma Rankings
Other Cities in Stephens County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Marlow | 4,451 | $56,655 | 21.9% | $136,300 |
| Comanche | 1,545 | $41,016 | 26.6% | $78,100 |
| Central High | 1,489 | $75,435 | 9.9% | $211,200 |
| Bray | 979 | $73,897 | 12.4% | $166,700 |
| Sunray | 854 | N/A | 19.2% | $87,800 |
| Empire City | 794 | $96,250 | 3.8% | $193,200 |
| Velma | 590 | $87,674 | 22.7% | $111,500 |
| Loco | 94 | $40,313 | 34.0% | $45,000 |
Cities Similar to Duncan
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Sapulpa | 22,570 | $63,817 | $171,600 | 20.1% | 14.2% |
| Ponca City | 24,326 | $55,941 | $135,800 | 20.6% | 17.9% |
| Ardmore | 24,877 | $53,900 | $170,000 | 21.3% | 17.4% |
| Bethany | 20,560 | $56,591 | $171,600 | 24.1% | 20.5% |
| Claremore | 20,166 | $58,685 | $188,700 | 22.2% | 12.1% |
Population Overview
Duncan is a small city located in Oklahoma, within Stephens County. The total population is 22,958. It ranks as the 20th most populous out of 834 Census-designated places in Oklahoma.
Age Demographics
The median age in Duncan is 39.9 years. This is 8% higher than the state median of 37.0 years.
Economy, Income & Housing
The median household income in Duncan is $58,054. This is 11% lower than the state median of $65,039. It is also 28% lower than the national median of $80,734. The poverty rate stands at 20.5%. This is 34% higher than the state poverty rate of 15.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 6.8%. This is 37% higher than the state rate of 5.0%. The median home value is $131,500. Housing costs are 34% lower than the state median of $199,800. With a home-value-to-income ratio of just 2.3x, Duncan is one of the most affordable housing markets in the area. 67.7% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 65.8%.
Race & Ethnicity
The largest racial or ethnic group in Duncan is White (non-Hispanic), making up 73.9% of the population. Hispanic or Latino residents account for 11.7%. The Black or African American population (2.1%) is well below the state average of 6.8%. The Asian population (0.6%) is well below the state average of 2.4%.
Education
20.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 29% lower than the state rate of 28.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.5%.
Data Sources & Methodology
All demographic data for Duncan, Oklahoma is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Oklahoma state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 834 Census-designated places in Oklahoma. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Duncan, Oklahoma?
Duncan, Oklahoma has a population of 22,958 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Duncan, OK?
The median household income in Duncan is $58,054, which is 28% lower than the national median of $80,734.
What is the poverty rate in Duncan, OK?
The poverty rate in Duncan is 20.5%. This means approximately 4,612 residents live below the federal poverty line.
What is the racial makeup of Duncan, Oklahoma?
Duncan's population is 73.9% White, 2.1% Black, 11.7% Hispanic/Latino, and 0.6% Asian.
What is the median home value in Duncan, OK?
The median home value in Duncan is $131,500. The home-value-to-income ratio is 2.3x.
How educated is Duncan, Oklahoma?
20.3% of adults (25+) in Duncan hold a bachelor's degree or higher, and 7.6% hold a graduate or professional degree.