Below is a list of Humboldt IL zip codes. For your research we have also included Humboldt Area Code, Time Zone, UTC and the local Coles County FIPS Code. Each Humboldt Illinois zip code has a center Longitude / Latitude point (the Humboldt center is -88.319198608398 / 39.601699829102). For your convenience we have also indicated if that zip code in Humboldt observes Daylight Savings time.