Below is a list of Grainfield KS zip codes. For your research we have also included Grainfield Area Code, Time Zone, UTC and the local Gove County FIPS Code. Each Grainfield Kansas zip code has a center Longitude / Latitude point (the Grainfield center is -100.46499633789 / 39.114799499512). For your convenience we have also indicated if that zip code in Grainfield observes Daylight Savings time.