Glen Head is located within the Town of Oyster Bay in Nassau County, New York. As of the United States 2000 Census, the population of Glen Head was 4,625.

Glen Head is a part of the North Shore School District. Glen Head was listed as one of the wealthiest zip codes on Long Island (according to Newsday's home value listings).

Additionally, it was also listed as the second most expensive zip code of the Northeast region and ranked 71 nationwide.