White Center is a census-designated place in King County, Washington, United States. It lies between West Seattle and Burien. The population was 16,631 at the 2020 census. White Center is sometimes referred to by the nickname "Rat City" due to the historical presence of a military Relocation and Training Center during World War II. The Rat City Rol…White Center is a census-designated place in King County, Washington, United States. It lies between West Seattle and Burien. The population was 16,631 at the 2020 census. White Center is sometimes referred to by the nickname "Rat City" due to the historical presence of a military Relocation and Training Center during World War II. The Rat City Rollergirls are a Seattle roller derby team that began training in White Center.