Pennsylvania has 5 digit zip codes that start with 1. Allentown has eight zip codes – 18101, 18105, 18102, 18106, 18103, 18109, 18104 and 18195. Altoona has three zip codes – 16601, 16603 and 16602.
Audubon has two zip codes as well – 19403 and 19407.
Bangor is among the Pennsylvanian cities that have three zip codes – 18010, 18050 and 18013. Beaver Springs has a couple of zip codes – 17812 and 17843. Bensalem has a couple of zip codes as well – 19020 and 19021.
Bethlehem has 6 zip codes – 18015, 18018, 18016, 18020, 18017 and 18025. Bloomsburg is among the Pennsylvanian cities with two zip codes – 17815 and 17839.