Drayton is a residential area of the city of Portsmouth in the English county of Hampshire. Together with Farlington it makes up one of the administrative districts of the city. Unlike the majority of the city of Portsmouth, Drayton lies on the mainland rather than Portsea Island. The small village of Drayton is mentioned in the Domesday Book of 1086 along with its neighbour Cosham but did not become incorporated into Portsmouth until 1920, when more land was needed for the rapidly growing city. Very quickly, the fields surrounding the village were built on, joining Drayton, Cosham and Farlington into one continuous development.