Below is a list of Neponset IL zip codes. For your research we have also included Neponset Area Code, Time Zone, UTC and the local Bureau County FIPS Code. Each Neponset Illinois zip code has a center Longitude / Latitude point (the Neponset center is -89.790702819824 / 41.297798156738). For your convenience we have also indicated if that zip code in Neponset observes Daylight Savings time.