Below is a list of Old Zionsville PA zip codes. For your research we have also included Old Zionsville Area Code, Time Zone, UTC and the local Lehigh County FIPS Code. Each Old Zionsville Pennsylvania zip code has a center Longitude / Latitude point (the Old Zionsville center is -75.523399353027 / 40.485298156738). For your convenience we have also indicated if that zip code in Old Zionsville observes Daylight Savings time.