Opened in 1881, the station was originally located in the Mill Plain area in the western part of Danbury, Connecticut.

The station opened in 1881 to coincide with the expansion of the NY&NE line west to the Hudson River.

[1] Mill Plain station had a long, low-level side platform that connected it to an adjoining freight depot,[2] which was also built in 1881.

[2] From 1930 up until 2018, the station building served as a residence and later a golf cart repair shop.

[1] In 2018 the station building was bought by the Danbury Railway Museum and moved to their rail yard.