Orpington is a town and electoral ward in Greater London, England, at the south-eastern edge of London’s urban sprawl. Part of the borough of Bromley, it is identified in the London Plan as one of 35 major centres in Greater London. It was an ancient parish in the county of Kent. It is located is 13.3 miles from Charing Cross. The town of Orpington, including its localities such as Petts Wood, Farnborough and Chelsfield, had a population of 90,315 as of 2011.