Below is a list of Oakfield WI zip codes. For your research we have also included Oakfield Area Code, Time Zone, UTC and the local Fond Du Lac County FIPS Code. Each Oakfield Wisconsin zip code has a center Longitude / Latitude point (the Oakfield center is -88.547500610352 / 43.683700561523). For your convenience we have also indicated if that zip code in Oakfield observes Daylight Savings time.