Sumner is an unincorporated community and census-designated place located in Noble County, Oklahoma, United States, ten miles east of Perry and two miles north of U.S. Route 64. Established prior to statehood along the St. Louis-San Francisco Railway, the post office opened on May 23, 1894. The town was named for Henry T. Sumner, a businessman from Perry. Per the 1905 Oklahoma Territorial Census, Sumner had sixty-four residents. The post office closed July 27, 1957.