Lewiston is a town in Niagara County, New York, United States.The town and its contained village are named after Morgan Lewis, a governor of New York.[4] The Town Supervisor is Steve Broderick and the Chief of Police is Frank Previte.The Supervisor also serves as an ex-officio board member on various community organizations.[10] Several federal, state, county and local law enforcement agencies protect the town.[citation needed] The Niagara River forms the western boundary of the town, which is an international border with Canada.In 2015, Lewiston-Porter was rated 10th best in Western New York and 2nd in Niagara Country, behind Starpoint Central School District.The Catholic Health-run Mount Saint Mary's Hospital (formed in 1907) is a six-floor facility that offers many differing kinds of high-level healthcare.