Stephens County, Oklahoma
Stephens County is a county located in the U.S. state of Oklahoma. As of the 2020 census, its population was 42,848. Its county seat is Duncan. The county was created at statehood, partly from the Chickasaw Nation in Indian Territory and partly from Comanche County in Oklahoma Territory. It was named for Texas politician John Hall Stephens.
Stephens County comprises the Duncan, OK micropolitan statistical area.