What are the Glyndon, Maryland Zip Codes for 2020, 2019Primary Zip Codes for GlyndonZip CodePrimary CitySecondary City21071GlyndonReisterstown21136ReisterstownGlyndonCities sharing Zip Codes with GlyndonZip CodePrimary CitySecondary CityMore Information21071GlyndonReisterstown Reisterstown population stats 21136ReisterstownGlyndonAdvertisements