Below is a list of Grafton County NH zip codes. For your research we have also included Grafton County Area Code, Time Zone, UTC and the local County FIPS Code. Each Grafton County New Hampshire zip code has a center Longitude / Latitude point (the Grafton County center is -71.918899536133 / 43.897998809814). For your convenience we have also indicated if that zip code in Grafton County observes Daylight Savings time.