Below is a list of Greer County OK zip codes. For your research we have also included Greer County Area Code, Time Zone, UTC and the local County FIPS Code. Each Greer County Oklahoma zip code has a center Longitude / Latitude point (the Greer County center is -99.511299133301 / 34.962299346924). For your convenience we have also indicated if that zip code in Greer County observes Daylight Savings time.