Pulborough is a big town and civil parish in the Horsham area of West Sussex, England, with some 5,000 inhabitants. It is located almost centrally within West Sussex as well as is 42 miles (68 kilometres) south west of London. It is at the joint of the north-south A29 and also the east-west (A283) roads. The town is near the assemblage of the River Arun and the River Rother, on the Stane Street Roman road from London to Chichester. It looks southwards over the wide flood plain of the tidal Arun to a backdrop of the South Downs. It is on the northern boundary of the newly-established South Downs National Park. The parish covers a location of 5,183 acres (2,098 hectares). The twelfth-century parish church is dedicated to St Mary. In the 2001 census there were 4,685 people residing in 1,976 families of whom 2,333 were financially active. At the 2011 Census the population of Bignor was included and the complete population was 5,206.