Ellis County is a county located on the western border of the U.S. state of Oklahoma. As of the 2020 census, the population was 3,749, making it the fifth-least populous county in Oklahoma. Its county seat is Arnett.
Ellis County Courthouse in Arnett
Arnett is a town in and the county seat of Ellis County, Oklahoma, United States. The population was 495 at the time of the 2020 census.
Ellis County courthouse