Below is a list of Fostoria IA zip codes. For your research we have also included Fostoria Area Code, Time Zone, UTC and the local Clay County FIPS Code. Each Fostoria Iowa zip code has a center Longitude / Latitude point (the Fostoria center is -95.155601501465 / 43.242000579834). For your convenience we have also indicated if that zip code in Fostoria observes Daylight Savings time.