Glen Cove is a city in Nassau County, New York, United States, on the North Shore of Long Island. At the 2020 United States Census, the city population was 28,365 as of the 2020 census. The city was considered part of the early 20th century Gold Coast of the North Shore, as the areas along the waterfront were developed as large country estates by wealthy entrepreneurs and businessmen such as J.P. Morgan, Phipps, Pratt, and Prybil. Glen Cove also had manufacturing and a diverse population that worked in industry, local agriculture and retail businesses. Of Nassau County's five municipalities, Glen Cove is one of the two municipalities that is a city, rather than a town, the other being Long Beach on the South Shore.