Below is a list of Hillsboro IA zip codes. For your research we have also included Hillsboro Area Code, Time Zone, UTC and the local Henry County FIPS Code. Each Hillsboro Iowa zip code has a center Longitude / Latitude point (the Hillsboro center is -91.708396911621 / 40.835399627686). For your convenience we have also indicated if that zip code in Hillsboro observes Daylight Savings time.