Below is a list of Westfield IN zip codes. For your research we have also included Westfield Area Code, Time Zone, UTC and the local Hamilton County FIPS Code. Each Westfield Indiana zip code has a center Longitude / Latitude point (the Westfield center is -86.129699707031 / 40.042701721191). For your convenience we have also indicated if that zip code in Westfield observes Daylight Savings time.