Plumpton is a village and civil parish in the Lewes District of East Sussex, England. The village is located five miles (8 km) north-west of Lewes. The parish measures 6.5 miles in length on its north–south axis and 1 mile at its widest on the B2116 Underhill Road. The southern half of the parish lies within the South Downs National Park and at the highest point, 214m (702 feet), the South Downs Way traverses the crest of Plumpton Plain. The parish includes the small village of Plumpton adjacent to the Downs and to the north the larger village of Plumpton Green where most of the community and services are based. Plumpton is known for its race course, and also Plumpton College, which farms over 2500 acres of land and has become one of the leading centres for land-based education in the UK.

Lewes is a local government district in East Sussex, England. The district is named after the town of Lewes. The largest town is Seaford. The district also includes the towns of Newhaven, Peacehaven and Telscombe and numerous villages and surrounding rural areas. The Council is based at Marine Workshops a former industrial building in Newhaven which it shares with East Sussex Colleges Group.