Below is a list of Dyer IN zip codes. For your research we have also included Dyer Area Code, Time Zone, UTC and the local Lake County FIPS Code. Each Dyer Indiana zip code has a center Longitude / Latitude point (the Dyer center is -87.509101867676 / 41.49280166626). For your convenience we have also indicated if that zip code in Dyer observes Daylight Savings time.