Below is a list of Grafton WI zip codes. For your research we have also included Grafton Area Code, Time Zone, UTC and the local Ozaukee County FIPS Code. Each Grafton Wisconsin zip code has a center Longitude / Latitude point (the Grafton center is -87.951797485352 / 43.319900512695). For your convenience we have also indicated if that zip code in Grafton observes Daylight Savings time.