Below is a list of Holderness NH zip codes. For your research we have also included Holderness Area Code, Time Zone, UTC and the local Grafton County FIPS Code. Each Holderness New Hampshire zip code has a center Longitude / Latitude point (the Holderness center is -71.588600158691 / 43.731300354004). For your convenience we have also indicated if that zip code in Holderness observes Daylight Savings time.