Below is a list of Nantucket County MA zip codes. For your research we have also included Nantucket County Area Code, Time Zone, UTC and the local County FIPS Code. Each Nantucket County Massachusetts zip code has a center Longitude / Latitude point (the Nantucket County center is -70.082801818848 / 41.274600982666). For your convenience we have also indicated if that zip code in Nantucket County observes Daylight Savings time.