Below is a list of Edwardsville IL zip codes. For your research we have also included Edwardsville Area Code, Time Zone, UTC and the local Madison County FIPS Code. Each Edwardsville Illinois zip code has a center Longitude / Latitude point (the Edwardsville center is -89.979400634766 / 38.79040145874). For your convenience we have also indicated if that zip code in Edwardsville observes Daylight Savings time.