Arnett is a town in Ellis County, Oklahoma, United States. The population was 520 at the 2000 census. It is the county seat of Ellis County.[3]
The townsite came about at the junction of local trading routes. A post office was established at the townsite in 1902, with William G. Brown as the postmaster. Brown is said to have named the post office Arnett after A. S. Arnett, Brown's minister from Fayetteville, West Virginia.[4][5][6]
