Below is a list of Nason IL zip codes. For your research we have also included Nason Area Code, Time Zone, UTC and the local Jefferson County FIPS Code. Each Nason Illinois zip code has a center Longitude / Latitude point (the Nason center is -88.96549987793 / 38.175598144531). For your convenience we have also indicated if that zip code in Nason observes Daylight Savings time.