Below is a list of Silvis IL zip codes. For your research we have also included Silvis Area Code, Time Zone, UTC and the local Rock Island County FIPS Code. Each Silvis Illinois zip code has a center Longitude / Latitude point (the Silvis center is -90.410598754883 / 41.511199951172). For your convenience we have also indicated if that zip code in Silvis observes Daylight Savings time.