Below is a list of Grannis AR zip codes. For your research we have also included Grannis Area Code, Time Zone, UTC and the local Polk County FIPS Code. Each Grannis Arkansas zip code has a center Longitude / Latitude point (the Grannis center is -94.333396911621 / 34.238098144531). For your convenience we have also indicated if that zip code in Grannis observes Daylight Savings time.