Below is a list of Colusa County CA zip codes. For your research we have also included Colusa County Area Code, Time Zone, UTC and the local County FIPS Code. Each Colusa County California zip code has a center Longitude / Latitude point (the Colusa County center is -122.11499786377 / 39.207298278809). For your convenience we have also indicated if that zip code in Colusa County observes Daylight Savings time.