What are the Erdman, Pennsylvania Zip Codes for 2020, 2019Primary Zip Codes for ErdmanZip CodePrimary CitySecondary City17048LykensErdman, Loyalton, SpecktownCities sharing Zip Codes with ErdmanZip CodePrimary CitySecondary CityMore Information17048LykensErdman17048LykensLoyalton17048LykensSpecktownAdvertisements