Niagara County New York ☎ +1 716-439-7000 Last Updated: 06/20/2024 | |
Niagara County is in the U.S. state of New York. As of the 2020 census, the population was 212,666. The county seat is Lockport. Niagara County is part of the Buffalo–Niagara Falls metropolitan area, and across the Canada–US border is the province of Ontario. | |