Olcott is a hamlet located in the Town of Newfane in Niagara County, New York, United States. As of the 2010 census, this community population was 1,241. Most locals refer to it as Olcott Beach. It is part of the Buffalo–Niagara Falls Metropolitan Statistical Area. Olcott is a lakeside community which is home to the deepest harbor on Lake Ontario west of Rochester. The community is at the junction of East/West Lake Road and Lockport-Olcott Road.