Below is a list of Earlham IA zip codes. For your research we have also included Earlham Area Code, Time Zone, UTC and the local Madison County FIPS Code. Each Earlham Iowa zip code has a center Longitude / Latitude point (the Earlham center is -94.123001098633 / 41.496200561523). For your convenience we have also indicated if that zip code in Earlham observes Daylight Savings time.