Koremasa Station is a terminus of the Seibu Tamagawa Line, and is located 8.0 kilometers from the opposing terminus of the line at Musashi-Sakai in Tokyo.

The station has a single side platform serving a single-directional track.

[3] In fiscal 2019, the station was the 73rd busiest on the Seibu network with an average of 7,838 passengers daily.

[4] The passenger figures for previous years are as shown below.

Media related to Koremasa Station at Wikimedia Commons