Below is a list of Mammoth Spring AR zip codes. For your research we have also included Mammoth Spring Area Code, Time Zone, UTC and the local Fulton County FIPS Code. Each Mammoth Spring Arkansas zip code has a center Longitude / Latitude point (the Mammoth Spring center is -91.549102783203 / 36.494701385498). For your convenience we have also indicated if that zip code in Mammoth Spring observes Daylight Savings time.