What are the S Williamsport, Pennsylvania Zip Codes for 2020, 2019Primary Zip Codes for S WilliamsportZip CodePrimary CitySecondary City17702WilliamsportS Williamsport, Oval, Armstrong, Bastress, Collomsville, Duboistown, Nisbet, S Williamspor, S Williamsprt, South Williamsport, Sylvan DellCities sharing Zip Codes with S WilliamsportZip CodePrimary CitySecondary CityMore Information17702WilliamsportArmstrong17702WilliamsportBastress17702WilliamsportCollomsville17702WilliamsportDuboistown17702WilliamsportNisbet17702WilliamsportS Williamspor17702WilliamsportS Williamsport17702WilliamsportS Williamsprt17702WilliamsportSouth Williamsport17702WilliamsportSylvan Dell17702WilliamsportOval Oval population stats Advertisements