What are the Midltwn, Pennsylvania Zip Codes for 2020, 2019Primary Zip Codes for MidltwnZip CodePrimary CitySecondary City17057MiddletownMidltwn, H I A, Hbg Inter Airp, Londonderry, Lower Swatara, Mdt, Middletwn, Royalton, Shope GardensCities sharing Zip Codes with MidltwnZip CodePrimary CitySecondary CityMore Information17057MiddletownH I A17057MiddletownHbg Inter Airp17057MiddletownLondonderry17057MiddletownLower Swatara17057MiddletownMdt17057MiddletownMiddletwn17057MiddletownMidltwn17057MiddletownRoyalton17057MiddletownShope GardensAdvertisements