Billericay railway station is on the Shenfield to Southend Line in the east of England, serving the town of Billericay in the Basildon district of the county of Essex. The vast majority of services on the Shenfield to Southend Line connect to the Great Eastern Main Line, linking Southend Victoria station in Southend-on-Sea to Liverpool Street station in London. The Engineer's Line Reference for the line is SSV and the station's three-letter station code is BIC. The platforms have an operational length for 12 carriages.