D'Iberville /diːˈaɪbərvɪl/ is a city in Harrison County, Mississippi, United States, immediately north of Biloxi, across the Back Bay. As of the 2010 census, it had a population of 9,486. It is part of the Gulfport–Biloxi Metropolitan Statistical Area. It is named after French explorer Pierre Le Moyne d'Iberville, who arrived at the area in 1699. Almost 300 years later, D'Iberville officially became a city in 1988.