Below is a list of Cassia County ID zip codes. For your research we have also included Cassia County Area Code, Time Zone, UTC and the local County FIPS Code. Each Cassia County Idaho zip code has a center Longitude / Latitude point (the Cassia County center is -113.66000366211 / 42.361999511719). For your convenience we have also indicated if that zip code in Cassia County observes Daylight Savings time.