The new London Overground line names and colours were introduced across the London rail network in November 2024 The line from Bury Street Junction, north of Edmonton Green station, to Cheshunt was opened by the Great Eastern Railway on 1 October 1891 when this station opened with the name Churchbury.

The district was still predominantly rural, and the coming of the tram to Waltham Cross in 1904 saw the railway unable to compete.

After that the line was used only by goods trains until it was electrified as part of a wider scheme, and the station reopened as Southbury on 21 November 1960.

[3] On 31 May 2015, the station and all services that call transferred from Abellio Greater Anglia to London Overground Rail Operations.

[4][5] All services at Southbury are operated as part of the Weaver line of the London Overground using Class 710 EMUs.