Below is a list of Oneida IL zip codes. For your research we have also included Oneida Area Code, Time Zone, UTC and the local Knox County FIPS Code. Each Oneida Illinois zip code has a center Longitude / Latitude point (the Oneida center is -90.227897644043 / 41.072898864746). For your convenience we have also indicated if that zip code in Oneida observes Daylight Savings time.