Below is a list of Marissa IL zip codes. For your research we have also included Marissa Area Code, Time Zone, UTC and the local Saint Clair County FIPS Code. Each Marissa Illinois zip code has a center Longitude / Latitude point (the Marissa center is -89.754203796387 / 38.254600524902). For your convenience we have also indicated if that zip code in Marissa observes Daylight Savings time.