Hersham is a village in Surrey, within the Greater London Urban Area and the M25. Its housing is relatively low-rise and diverse and it has four technology/trading estates. The main A3 London to Portsmouth road runs by Painshill on its southern boundary with a roundabout junction. The only contiguous settlement is Walton-on-Thames, its post town.Hersham Green, in the nucleus of the village, is 3.4 acres (1.4 ha) of open space where regular events take place throughout the summer.