EntityQ5050621· pop 5· linked from 53 articlesCastletonSign in to saveunincorporated community in Harford County, MarylandConnectionscityEntityMarylandEntitytime zoneEntitygeographic coordinate systemEntityU.S. stateEntityDaylight saving timeConcepttownEntityQ5390EntityUTC−04:00Entitytelephone numbering planEntityUnited States Geological SurveyEntityAberdeenEntityEastern Time ZoneEntityHarford CountyEntityunincorporated areaEntitycensus-designated place in the United StatesEntityHavre de GraceEntitycounty seatEntityUnited States Department of the InteriorEntityBel AirEntityCategoriesUnincorporated communities in Harford County, MarylandUnincorporated communities in Maryland