City in Stephens County, Oklahoma · 42.9 sq mi · 545 people per sq mi
About 23,000 people live in Duncan. The typical household earns $58,054, and the median resident is 39.9 years old.
2026 projection
From 22,625 in 2020
Poverty rate 20.5%
Men 38.3 · Women 41.9
1900–2026
23,388
2026 projection
3.4% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1900–2026
23,388
2026 projection
3.4% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 23,388 | +150 | 0.65% |
|---|---|---|---|
| 2025 | 23,238 | +12 | 0.05% |
| 2024 | 23,226 | +23 | 0.10% |
| 2023 | 23,203 | +199 | 0.87% |
| 2022 | 23,004 | +241 | 1.06% |
| 2021 | 22,763 | +138 | 0.61% |
| 2020 | 22,625 | +247 | 1.10% |
| 2019 | 22,378 | +12 | 0.05% |
| 2018 | 22,366 | -108 | 0.48% |
| 2017 | 22,474 | -349 | 1.53% |
Showing 10 of 28 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 230 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 5 residents
51% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 51% | 51% | 50% |
| Never married | 25% | 29% | 22% |
| Divorced | 14% | 13% | 14% |
| Widowed | 8% | 4% | 12% |
| Separated | 2% | 3% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau