Adur District in the context of Brighton/Worthing/Littlehampton

Shoreham-by-Sea (often shortened to Shoreham) is a coastal town and port in the Adur district, in the county of West Sussex, England. In 2011 it had a population of 20,547.

The town is bordered to its north by the South Downs, to its west by the Adur Valley, and to its south by the River Adur and Shoreham Beach on the English Channel. The town lies in the middle of the ribbon of urban development along the English south coast, approximately equidistant from the city of Brighton and Hove to the east and the town of Worthing to the west. Shoreham covers an area of 2,430 acres (980 ha) and has a population of 20,547 (2011 census).

Arun is a local government district in West Sussex, England. Its council is based in Littlehampton. The district's other towns are Arundel and Bognor Regis. The district is named after the River Arun, which runs through the centre of the district. Parts of the district fall within the South Downs National Park.

The district is on the coast, facing the English Channel. The neighbouring districts are Chichester, Horsham, Adur and Worthing.