 Nishiya Station opened on December 1, 1926.In fiscal 2011, the station was used by an average of 23,327 passengers daily.The Kanagawa Eastern Line is an approximately 10 km link, which is operated from Nishiya to via and , that enable through services between the JR East Saikyō Line and the Sōtetsu Main Line by 30 November 2019, and between the Tōkyū Tōyoko Line, the Tōkyū Meguro Line and the Sōtetsu Main Line by late 2022.