Biloxi is a city in Harrison County, Mississippi, in the U.S.. The 2000 census recorded the population as 50,644. Biloxi is co–county seat with the larger city Gulfport, in the Gulfport-Biloxi, Mississippi Metropolitan Statistical Area, which is included in the Gulfport-Biloxi-Pascagoula, Mississippi Combined Statistical Area. Biloxi apartments for rent comparison page shows most up to date rent information on Biloxi apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.