Below is a list of Stillwater PA zip codes. For your research we have also included Stillwater Area Code, Time Zone, UTC and the local Columbia County FIPS Code. Each Stillwater Pennsylvania zip code has a center Longitude / Latitude point (the Stillwater center is -76.367401123047 / 41.151500701904). For your convenience we have also indicated if that zip code in Stillwater observes Daylight Savings time.