Hōnanchō Station is the terminus of the 3.2 km (2.0 mi) Honancho branch of the Tokyo Metro Marunouchi Line from Nakano-sakaue.

The station consists of a single underground island platform on the second basement level, serving two tracks.

[3] The station facilities were inherited by Tokyo Metro after the privatization of the Teito Rapid Transit Authority (TRTA) in 2004.

[4] Construction work started in 2013 to extend the platform-edge doors along the platforms to handle six-car trains, allowing through-running services to and from Ikebukuro via the main Marunouchi Line from fiscal 2017.

[5] In fiscal 2013, the station was the hundredth-busiest on the Tokyo Metro network with an average of 33,335 passengers daily.