Below is a list of Merrimac MA zip codes. For your research we have also included Merrimac Area Code, Time Zone, UTC and the local Essex County FIPS Code. Each Merrimac Massachusetts zip code has a center Longitude / Latitude point (the Merrimac center is -71.004997253418 / 42.831699371338). For your convenience we have also indicated if that zip code in Merrimac observes Daylight Savings time.