Below is a list of Rockton IL zip codes. For your research we have also included Rockton Area Code, Time Zone, UTC and the local Winnebago County FIPS Code. Each Rockton Illinois zip code has a center Longitude / Latitude point (the Rockton center is -89.066299438477 / 42.452499389648). For your convenience we have also indicated if that zip code in Rockton observes Daylight Savings time.