[5][6] The name was suggested by local farmer Bertha Black, whose mother was originally from Chelsea.

[5][6] In 1977, boom barriers replaced interlocked gates at the former Chelsea Road level crossing, which was located at the up end of the station.

[7] The interlocked frame was also abolished at this time, replaced by a control panel within the former signal box.

[10] On 4 May 2010, as part of the 2010/2011 State Budget, $83.7 million was allocated to upgrade Chelsea to a premium station, along with nineteen others.

[17][18] The line was rebuilt below in a trench, with the level crossing permanently closed to road vehicles, and nearby Thames Promenade extended to the Nepean Highway.