Located in downtown Darien, the station has two accessible side platforms serving the outer tracks of the four-track New Haven Line.

[4]: 20 Several parking lots on both sides of the tracks serve the station with a total of 860 spaces.

The parking lot at the corner of West and Leroy Avenues is privately owned.

[7] In the 1890s, the railroad tracks were raised above the street level, creating the railroad bridges over the Post Road, which marks the east side of the station, and over Leroy Avenue, at the western end.

By October 2020, platform replacement and accessibility improvements totaling $34M were planned to begin in February 2022.