Below is a list of Willow Grove PA zip codes. For your research we have also included Willow Grove Area Code, Time Zone, UTC and the local Montgomery County FIPS Code. Each Willow Grove Pennsylvania zip code has a center Longitude / Latitude point (the Willow Grove center is -75.119697570801 / 40.149101257324). For your convenience we have also indicated if that zip code in Willow Grove observes Daylight Savings time.