Below is a list of Sweetwater OK zip codes. For your research we have also included Sweetwater Area Code, Time Zone, UTC and the local Roger Mills County FIPS Code. Each Sweetwater Oklahoma zip code has a center Longitude / Latitude point (the Sweetwater center is -99.911399841309 / 35.439399719238). For your convenience we have also indicated if that zip code in Sweetwater observes Daylight Savings time.