Stateline, officially the City of State Line, and historically known as State Line Village, is a city in Kootenai County, Idaho, United States, and is both the easternmost suburb of Spokane, Washington and the westernmost suburb of Coeur d'Alene, Idaho. The population was 39 at the 2020 census. The city is known for the adult services it provides which attract business from nearby Spokane and Coeur d'Alene.