Below is a list of Newmarket NH zip codes. For your research we have also included Newmarket Area Code, Time Zone, UTC and the local Rockingham County FIPS Code. Each Newmarket New Hampshire zip code has a center Longitude / Latitude point (the Newmarket center is -70.937400817871 / 43.077598571777). For your convenience we have also indicated if that zip code in Newmarket observes Daylight Savings time.