Below is a list of Deer Grove IL zip codes. For your research we have also included Deer Grove Area Code, Time Zone, UTC and the local Whiteside County FIPS Code. Each Deer Grove Illinois zip code has a center Longitude / Latitude point (the Deer Grove center is -89.689399719238 / 41.6077003479). For your convenience we have also indicated if that zip code in Deer Grove observes Daylight Savings time.