Wallington railway station is in the London Borough of Sutton in south London. The station, and all trains serving it, is operated by Southern, and is in Travelcard Zone 5. It is between Waddon and Carshalton Beeches, 13 miles 5 chains (13.06 miles, 21.02 km) down the line from London Bridge, measured via Forest Hill. Ticket barriers are in operation at this station.