EntityQ3474358· pop 5· linked from 216 articlesUnionvilleSign in to savecensus-designated place in Chester County, PennsylvaniaConnectionsEastern Time ZoneEntityunincorporated areaEntitycensus-designated place in the United StatesEntity2020 United States CensusEntityPennsylvaniaEntitytime zoneEntitygeographic coordinate systemEntityDaylight saving timeConceptUnited States House of RepresentativesConceptQ5390EntityUTC−04:00EntityUnited States Census BureauEntitytelephone numbering planEntityChester CountyEntityNational Park ServiceEntityNational Register of Historic PlacesEntityWest ChesterEntityZIP codeEntitycounty seatEntityCoatesvilleEntityCategoriesUnincorporated communities in Chester County, PennsylvaniaUnincorporated communities in Pennsylvania