Below is a list of Shamrock OK zip codes. For your research we have also included Shamrock Area Code, Time Zone, UTC and the local Creek County FIPS Code. Each Shamrock Oklahoma zip code has a center Longitude / Latitude point (the Shamrock center is -96.583999633789 / 35.911201477051). For your convenience we have also indicated if that zip code in Shamrock observes Daylight Savings time.