Below is a list of Willimantic CT zip codes. For your research we have also included Willimantic Area Code, Time Zone, UTC and the local Windham County FIPS Code. Each Willimantic Connecticut zip code has a center Longitude / Latitude point (the Willimantic center is -72.217498779297 / 41.712898254395). For your convenience we have also indicated if that zip code in Willimantic observes Daylight Savings time.