sentences:  The per capita income for the CDP was $21,141.About 9.8% of families and 13.8% of the population were below the poverty line, including 23.0% of those under age 18 and 3.1% of those age 65 or over.While Grand Bay is unincorporated, the area is served by the Grand Bay Water Works Board for water service and an active volunteer fire department for fire protection.