Barnum Island is a hamlet and census-designated place (CDP) in Nassau County, New York, United States.Previously called Hog Island, after the feral pigs introduced by early European explorers to the Native Americans, it was later renamed for Sarah Ann Baldwin Barnum.[3][4] Between 1851 and 1870, Sarah Ann's husband Peter owned large parcels of land on Long Island, though his primary business was a Manhattan clothier.[citation needed] As of the census[12] of 2020, there were 2,590 people, 1,062 housing units, and 958 households residing in the CDP.Nassau County purchased Nunley's Carousel in 1995, restored it, and reopened it in 2009 at the Cradle of Aviation Museum in Garden City, New York.Other Nunley's rides and games were sold at auction after the park closed in 1995 and are now scattered all over the country.