Below is a list of Horsham PA zip codes. For your research we have also included Horsham Area Code, Time Zone, UTC and the local Montgomery County FIPS Code. Each Horsham Pennsylvania zip code has a center Longitude / Latitude point (the Horsham center is -75.137901306152 / 40.183300018311). For your convenience we have also indicated if that zip code in Horsham observes Daylight Savings time.