Below is a list of Westfield WI zip codes. For your research we have also included Westfield Area Code, Time Zone, UTC and the local Marquette County FIPS Code. Each Westfield Wisconsin zip code has a center Longitude / Latitude point (the Westfield center is -89.6209 / 43.9208). For your convenience we have also indicated if that zip code in Westfield observes Daylight Savings time. For more information on Westfield Wisconsin you will find helpful business links and searches.