What are the Williams Twp, Pennsylvania Zip Codes for 2020, 2019Primary Zip Codes for Williams TwpZip CodePrimary CitySecondary City18042EastonWilliams Twp, College Hill, Glendon, West Easton, Williams Township,Cities sharing Zip Codes with Williams TwpZip CodePrimary CitySecondary CityMore Information18042EastonCollege Hill18042EastonGlendon18042EastonWest Easton18042EastonWilliams Township18042EastonWilliams TwpAdvertisements