Below is a list of Darien WI zip codes. For your research we have also included Darien Area Code, Time Zone, UTC and the local Walworth County FIPS Code. Each Darien Wisconsin zip code has a center Longitude / Latitude point (the Darien center is -88.709503173828 / 42.59939956665). For your convenience we have also indicated if that zip code in Darien observes Daylight Savings time.