Below is a list of Oneida County WI zip codes. For your research we have also included Oneida County Area Code, Time Zone, UTC and the local County FIPS Code. Each Oneida County Wisconsin zip code has a center Longitude / Latitude point (the Oneida County center is -89.55940246582 / 45.748901367188). For your convenience we have also indicated if that zip code in Oneida County observes Daylight Savings time.