Zip Code Listings for Johnstown, Pennsylvania The following are the areas codes and zip codes for Johnstown, Pennsylvania 15901 (area code: 814)
15902 (area code: 814)
15904 (area code: 814)
15905 (area code: 814)
15906 (area code: 814)
15907 (area code: 814)
15909 (area code: 814)
15915 (area code: 814)
15945 (area code: 814)