The station opened as Park Street & Frogmore in 1858, when the London and North Western Railway built its branch line from Watford Junction to St Albans. It was not an immediate success, and was closed from 1859 until 1861. It had been relocated to its present position by the 1890s. The station was renamed Park Street on 6 May 1974.[1]
It is now a simple unstaffed halt, like all the other stations on the line.
The typical off-peak service on all days of the week is one train per hour in each direction between Watford Junction and St Albans Abbey. This is increased to a train approximately every 45 minutes in each direction during the peak hours.[2]
In December 2017 responsibility for the branch line passed from London Midland to London Northwestern Railway. Installation of Oyster Card readers on the stations along the branch is a possibility, although there are other ticketing options too.
Restoration of the crossing loop at Bricket Wood is being considered by the local authorities and Network Rail, which would facilitate trains running every 30 minutes.
Jowett, Alan (March 1989). Jowett's Railway Atlas of Great Britain and Ireland: From Pre-Grouping to the Present Day (1st ed.). Sparkford: Patrick Stephens Ltd. ISBN978-1-85260-086-0. OCLC22311137.