Below is a list of La Grange IL zip codes. For your research we have also included La Grange Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each La Grange Illinois zip code has a center Longitude / Latitude point (the La Grange center is -87.869300842285 / 41.805099487305). For your convenience we have also indicated if that zip code in La Grange observes Daylight Savings time.