Below is a list of Lannon WI zip codes. For your research we have also included Lannon Area Code, Time Zone, UTC and the local Waukesha County FIPS Code. Each Lannon Wisconsin zip code has a center Longitude / Latitude point (the Lannon center is -88.163902282715 / 43.149799346924). For your convenience we have also indicated if that zip code in Lannon observes Daylight Savings time.