Located at the intersection of West 231st Street and Broadway in the Kingsbridge neighborhood of the Bronx, it is served by the 1 train at all times.

To address overcrowding, in 1909, the New York Public Service Commission proposed lengthening the platforms at stations along the original IRT subway.

[3]: 168  As part of a modification to the IRT's construction contracts made on January 18, 1910, the company was to lengthen station platforms to accommodate ten-car express and six-car local trains.

[12] In 2002, it was announced that 231st Street would be one of ten subway stations citywide, as well as one of five on the IRT Broadway–Seventh Avenue Line, to receive renovations.

[13] The station was extensively renovated in 2003–2004, which included installation of elevators for both platforms to make it fully ADA-accessible and replacing the exit-only turnstiles on the 242nd Street-bound platform with both High Entry/Exit and Exit-only turnstiles, allowing both access and exit from that side.

It consists of gray marble tiles with a green border on the platform walls of the station house.

It consists of stained glass panels on the platform windscreens depicting images of the surrounding area.

A set of doors from the platform leads to a small waiting area and a bank of turnstiles.