Below is a list of Fenton IL zip codes. For your research we have also included Fenton Area Code, Time Zone, UTC and the local Whiteside County FIPS Code. Each Fenton Illinois zip code has a center Longitude / Latitude point (the Fenton center is -90.030197143555 / 41.730701446533). For your convenience we have also indicated if that zip code in Fenton observes Daylight Savings time.