Emsworth is a small town in Hampshire on the south coast of England, near the border of West Sussex. It lies at the north end of an arm of Chichester Harbour, a large and shallow inlet from the English Channel and is equidistant between Portsmouth and Chichester. The town has a basin for small yachts and fishing boats, which fills at high tide and can be emptied through a sluice at low tide. The town is the heart of the Emsworth (cross-county) built-up area, the remainder of which is Westbourne, Southbourne and Nutbourne. The area shares two railway stations. The harbour is now used almost exclusively for recreational sailing. The town has two sailing clubs, Emsworth Sailing Club and Emsworth Slipper Sailing Club, the latter based at Quay Mill, a former tide mill. Both clubs organise a programme of racing and social events during the sailing season.
Emsworth has a population of over 10,000 people. Emsworth also forms part of the wider Emsworth built-up area which has a population of over 18,777 people.