Below is a list of Wilmette IL zip codes. For your research we have also included Wilmette Area Code, Time Zone, UTC and the local Cook County FIPS Code. Each Wilmette Illinois zip code has a center Longitude / Latitude point (the Wilmette center is -87.732299804688 / 42.075199127197). For your convenience we have also indicated if that zip code in Wilmette observes Daylight Savings time.