Below is a list of Dedham IA zip codes. For your research we have also included Dedham Area Code, Time Zone, UTC and the local Carroll County FIPS Code. Each Dedham Iowa zip code has a center Longitude / Latitude point (the Dedham center is -94.82209777832 / 41.90599822998). For your convenience we have also indicated if that zip code in Dedham observes Daylight Savings time.