Below is a list of Fond Du Lac County WI zip codes. For your research we have also included Fond Du Lac County Area Code, Time Zone, UTC and the local County FIPS Code. Each Fond Du Lac County Wisconsin zip code has a center Longitude / Latitude point (the Fond Du Lac County center is -88.510101318359 / 43.778800964355). For your convenience we have also indicated if that zip code in Fond Du Lac County observes Daylight Savings time.