Locust Valley is a hamlet and census-designated place located in the Town of Oyster Bay in Nassau County, on the North Shore of Long Island, in New York, United States. The one-square-mile, quaint, unincorporated hamlet is a hidden gem to most Long Islanders. The population was 3,571 at the 2020 census.
Bailey Arboretum, located in Locust Valley, New York, is a beautiful and serene botanical garden and nature preserve on Long Island's North Shore. It offers visitors a peaceful environment to explore a variety of plant collections, learn about horticulture, and enjoy the natural beauty of the area.