Below is a list of Niles IL zip codes. For your research we have also included Niles Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Niles Illinois zip code has a center Longitude / Latitude point (the Niles center is -87.81420135498 / 42.026100158691). For your convenience we have also indicated if that zip code in Niles observes Daylight Savings time.