Below is a list of Matlock IA zip codes. For your research we have also included Matlock Area Code, Time Zone, UTC and the local Sioux County FIPS Code. Each Matlock Iowa zip code has a center Longitude / Latitude point (the Matlock center is -95.935997009277 / 43.244400024414). For your convenience we have also indicated if that zip code in Matlock observes Daylight Savings time.