Saltaire is a village on Fire Island in the southern part of the Town of Islip in Suffolk County, New York, United States. The year-round population was 37 at the 2010 census, which, as a summer beach c…Saltaire is a village on Fire Island in the southern part of the Town of Islip in Suffolk County, New York, United States. The year-round population was 37 at the 2010 census, which, as a summer beach community, increases many times over in the summer.