Below is a list of Olds IA zip codes. For your research we have also included Olds Area Code, Time Zone, UTC and the local Henry County FIPS Code. Each Olds Iowa zip code has a center Longitude / Latitude point (the Olds center is -91.544898986816 / 41.134601593018). For your convenience we have also indicated if that zip code in Olds observes Daylight Savings time.