Below is a list of Chatham PA zip codes. For your research we have also included Chatham Area Code, Time Zone, UTC and the local Chester County FIPS Code. Each Chatham Pennsylvania zip code has a center Longitude / Latitude point (the Chatham center is -75.821296691895 / 39.854099273682). For your convenience we have also indicated if that zip code in Chatham observes Daylight Savings time.