Census place · GEOID 4021900 · Stephens County
Duncan, OK ZIP codes
4 ZIP/ZCTAs intersecting this Census place in Stephens County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Duncan (GEOID 4021900). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 42,878 (4 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of Duncan, OK

ZIP/ZCTA overlap with Duncan
Population overlap
Share of each ZIP/ZCTA’s population located within Duncan, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting Duncan
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 73055 | Marlow | Stephens County | 9,639 | $63,545 |
| 73434 | Foster | Stephens County | 547 | $62,750 |
| 73529 | Comanche | Stephens County | 4,757 | $66,759 |
| 73533 | Duncan | Stephens County | 27,935 | $59,341 |
USPS associates these ZIPs with Duncan
These codes list Duncan as a primary or acceptable city. They are not used for the ACS headline.
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 73534 | Duncan | Stephens County | 1,255 | — |
| 73536 | Duncan | Stephens County | — | — |