Duncan is located in Stephens County, OK. The population is 23,395, making Duncan the largest city in Stephens County.
There are 11 public schools in Duncan with an average Homefacts rating of C. The total crime rate for Duncan is moderate , and there are 50 registered sex offenders residing in the city. Unemployment in Duncan is moderate and the median home sales price is $0. Detailed and up-to-date Duncan property reports are available for any property address.
Cities near Duncan include Empire City, Meridian and Central High.