Below is a list of Raritan IL zip codes. For your research we have also included Raritan Area Code, Time Zone, UTC and the local Henderson County FIPS Code. Each Raritan Illinois zip code has a center Longitude / Latitude point (the Raritan center is -90.825302124023 / 40.695999145508). For your convenience we have also indicated if that zip code in Raritan observes Daylight Savings time.