Lido Beach is a hamlet and census-designated place (CDP) in the Town of Hempstead in Nassau County, New York, United States.

[2] The 39-year-old former state senator and real estate developer had already developed four Brooklyn neighborhoods (Bedford-Stuyvesant, Borough Park, Bensonhurst, and South Brownsville), as well as Coney Island's Dreamland, the world's largest amusement park.

[2] Beginning in 1906, he gathered investors and acquired the oceanfront from private owners and the rest of Long Beach island from the Town of Hempstead.

[2] He planned to build a boardwalk, homes, and hotels, and dredged Reynolds Channel to create the Long Beach, New York resort area.

[2] In 1929, after Reynolds was defeated for re-election as the Long Beach mayor, he turned his attention to the unincorporated area just east of the city and constructed the Moorish-style Lido Beach Hotel.

24.6% of all households were made up of individuals, and 13.1% had someone living alone who was 65 years of age or older.