Below is a list of Colby KS zip codes. For your research we have also included Colby Area Code, Time Zone, UTC and the local Thomas County FIPS Code. Each Colby Kansas zip code has a center Longitude / Latitude point (the Colby center is -101.04599761963 / 39.387100219727). For your convenience we have also indicated if that zip code in Colby observes Daylight Savings time.