EntityQ754623· pop 26· linked from 99 articlesCaliforniaSign in to savecensus-designated place in St. Mary's County, Maryland, United StatesConnectionsrace and ethnicity in the United States CensusEntityMarylandEntityUnited States Census BureauEntityCaliforniaEntitymarriageEntitytime zoneEntitygeographic coordinate systemEntityBaltimoreEntityU.S. stateEntityAnnapolisEntityDaylight saving timeConceptAfrican AmericansEntitytownEntityQ5390EntityUTC−04:00Entitycounty of the United StatesEntitytelephone numbering planEntityRockvilleEntityChesapeake BayEntityFrederickEntityCategoriesCensus-designated places in MarylandCensus-designated places in St. Mary's County, MarylandMaryland populated places on the Chesapeake Bay