Sayamagaoka Station is served by the Seibu Ikebukuro Line from in Tokyo, with some services inter-running via the Tokyo Metro Yurakucho Line to and the Tokyo Metro Fukutoshin Line to and onward via the Tokyu Toyoko Line and Minato Mirai Line to . Located between and , it is 31. +more6 km from the Ikebukuro terminus.
The station consists of a ground-level island platform serving two tracks. Stabling tracks lie on the down side of the station, which were formerly used by freight trains.
File:Sayamagaoka Station west entrance jan22 2016.jpg|The west entrance in January 2016 File:Sayamagaoka Station ticket gates jan22 2016.jpg|The ticket barriers in January 2016
The station opened on 15 April 1915, initially named Moto-Sayama Station (元狭山駅). This was renamed Mikajimamura Station (三ヶ島村駅) in August of the same year. +more The station was renamed Sayamagaoka from 1 March 1933.
Station numbering was introduced on all Seibu Railway lines during fiscal 2012, with Sayamagaoka Station becoming "SI20".
In fiscal 2019, the station was the 20th busiest on the Seibu network with an average of 25,107 passengers daily. The passenger figures for previous years are as shown below.
|Fiscal year||Daily average|