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Kingston upon Hull, usually shortened to Hull, is a port city and unitary authority area in the East Riding of Yorkshire, England. It lies upon the River Hull at its confluence with the Humber Estuary, 25 miles (40 km) inland from the North Sea and 37 miles (60 km) south-east of York, the historic county town. With a population of 268,852 (2022), it is the fourth-largest city in the Yorkshire and the Humber region after Leeds, Sheffield and Bradford. Hull has more than 800 years of seafaring history and is known as Yorkshire's maritime city.