Below is a list of Gilman CT zip codes. For your research we have also included Gilman Area Code, Time Zone, UTC and the local New London County FIPS Code. Each Gilman Connecticut zip code has a center Longitude / Latitude point (the Gilman center is -72.199699401855 / 41.577098846436). For your convenience we have also indicated if that zip code in Gilman observes Daylight Savings time.