Effingham is a large semi-rural and rural English village in the Borough of Guildford in Surrey, reaching from the gently sloping northern plain to the crest of the North Downs and with a medieval parish church.
The M25 motorway is 4 miles (6.4 km) north-west of the middle of the village which mostly consists of green space in the Metropolitan Green Belt.
An eponymous Junction railway station is 50m north of its boundary in East
Horsley, where a branch of the Sutton and Mole Valley Lines joins the New Guildford Line, which have services terminating at London Waterloo.