What are the Social Security Admin, Maryland Zip Codes for 2020, 2019Primary Zip Codes for Social Security AdminZip CodePrimary CitySecondary City21241BaltimoreSocial Security Admin21290BaltimoreSocial Security AdminCities sharing Zip Codes with Social Security AdminZip CodePrimary CitySecondary CityMore Information21241BaltimoreSocial Security Admin21290BaltimoreSocial Security AdminAdvertisements