Below is a list of Hancock IA zip codes. For your research we have also included Hancock Area Code, Time Zone, UTC and the local Pottawattamie County FIPS Code. Each Hancock Iowa zip code has a center Longitude / Latitude point (the Hancock center is -95.362396240234 / 41.389999389648). For your convenience we have also indicated if that zip code in Hancock observes Daylight Savings time.