what is the zip code of duncan oklahoma
73533 Zip Code (Duncan, OK) Detailed Profile. Cities: Duncan, OK (10.67%), Central High, OK (4.77%), Empire City, OK (2.28%), Bray, OK (1.08%), Marlow, OK (0.00%), Velma, OK (0.00%) Counties: Stephens County, OK (98.70%), Cotton County, OK (1.30%)