Below is a list of Larchwood IA zip codes. For your research we have also included Larchwood Area Code, Time Zone, UTC and the local Lyon County FIPS Code. Each Larchwood Iowa zip code has a center Longitude / Latitude point (the Larchwood center is -96.437103271484 / 43.452899932861). For your convenience we have also indicated if that zip code in Larchwood observes Daylight Savings time.