Efforts to open a public library in Wyandanch began in 1973 when the Wyandanch Community Development Corporation established a Library Committee, comprised of Joyce Bagnall, Delia Burnett, Geraldine Diggs, Sister Carol Kenz, Maria Lightner, Edith Reisner and Barbara Rooks. The following year, 1974, voters approved a referendum to establish a library.
Housed in two leased, portable buildings, the Wyandanch Public Library opened on November 11, 1975, with Wendell Cherry as Library Director. The present library building opened in October 1989.