Below is a list of Butternut WI zip codes. For your research we have also included Butternut Area Code, Time Zone, UTC and the local Ashland County FIPS Code. Each Butternut Wisconsin zip code has a center Longitude / Latitude point (the Butternut center is -90.498802185059 / 46.013000488281). For your convenience we have also indicated if that zip code in Butternut observes Daylight Savings time.