Below is a list of Tiffin IA zip codes. For your research we have also included Tiffin Area Code, Time Zone, UTC and the local Johnson County FIPS Code. Each Tiffin Iowa zip code has a center Longitude / Latitude point (the Tiffin center is -91.675201416016 / 41.708099365234). For your convenience we have also indicated if that zip code in Tiffin observes Daylight Savings time.