Below is a list of Jewett IL zip codes. For your research we have also included Jewett Area Code, Time Zone, UTC and the local Cumberland County FIPS Code. Each Jewett Illinois zip code has a center Longitude / Latitude point (the Jewett center is -88.244903564453 / 39.210800170898). For your convenience we have also indicated if that zip code in Jewett observes Daylight Savings time.