Below is a list of Mashantucket CT zip codes. For your research we have also included Mashantucket Area Code, Time Zone, UTC and the local New London County FIPS Code. Each Mashantucket Connecticut zip code has a center Longitude / Latitude point (the Mashantucket center is -71.96199798584 / 41.465000152588). For your convenience we have also indicated if that zip code in Mashantucket observes Daylight Savings time.