What are the Kingston, Maryland Zip Codes for 2020, 2019Primary Zip Codes for KingstonZip CodePrimary CitySecondary City21871WestoverKingston, Easton Correctional Inst, RumbleyCities sharing Zip Codes with KingstonZip CodePrimary CitySecondary CityMore Information21871WestoverEaston Correctional Inst21871WestoverKingston21871WestoverRumbleyAdvertisements