Custer City is a town in Custer County, Oklahoma, United States. Custer City is northeast of Clinton and northwest of Weatherford along Oklahoma 33. The population was 367 at the time of the 2020 census. Custer City was originally known as Graves, and a post office was established there on January 22, 1894. The post office changed its name to Custer City on September 28, 1904, in honor of Lt. Col. George Armstrong Custer.