Below is a list of Seymour CT zip codes. For your research we have also included Seymour Area Code, Time Zone, UTC and the local New Haven County FIPS Code. Each Seymour Connecticut zip code has a center Longitude / Latitude point (the Seymour center is -73.133697509766 / 41.426700592041). For your convenience we have also indicated if that zip code in Seymour observes Daylight Savings time.