Southwick (/ˈsaʊθwɪk/) is a town in the Adur district of West Sussex, England located five miles (8 km) west of Brighton. It covers an area of 863.7 hectares ( 2,134.25 acres) and has a population of 13,195 persons (2001 census). The main road which passes through the town is now designated the A259 coast road. The A27 road bypasses the town to its north.