It is the larger ( population wise ) of two , aom cities of the Gulfport-Biloxi , Mississippi Metropolitan Statistical Area , which is included in the Gulfport-Biloxi-Pascagoula , Mississippi Combined Statistical Area . It is the larger of the two principal cities of the Gulfport-Biloxi , Mississippi Metropolitan Statistical Area , which is included in the Gulfport-Biloxi-Pascagoula , Mississippi Combined Statistical Area .