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Lockport is both a city and the town that surrounds it in Niagara County, New York, United States. The city is the Niagara county seat, with a population of 21,165 according to 2010 census figures, and an estimated population of 20,305 as of 2019. Its name derives from a set of Erie Canal locks (Lock Numbers 34 and 35) within the city that were built to allow canal barges to traverse the 60-foot natural drop of the Niagara Escarpment. It is part of the Buffalo–Niagara Falls Metropolitan Statistical Area.