Jericho is a hamlet and census-designated place in the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States, approximately 29 miles east of Midtown Manhattan. The population was 14,808 at the time of the 2020 census. The area is served by the Jericho Union Free and the Syosset Central School Districts, the boundaries of which differ somewhat from those of the hamlet.