
Barkingside was so named in 1538 being on the extreme edge of the old parish of Barking. The word side is associated with a slope or hill especially one extending for a considerable distance, which was no doubt the case during the 16th century.
The station was opened as BARKINGSIDE by the Great Eastern Railway on 1 May 1903 and first used by Underground trains on 31 May 1948.