Below is a list of Colusa IL zip codes. For your research we have also included Colusa Area Code, Time Zone, UTC and the local Hancock County FIPS Code. Each Colusa Illinois zip code has a center Longitude / Latitude point (the Colusa center is -91.16739654541 / 40.57080078125). For your convenience we have also indicated if that zip code in Colusa observes Daylight Savings time.