Below is a list of Henniker NH zip codes. For your research we have also included Henniker Area Code, Time Zone, UTC and the local Merrimack County FIPS Code. Each Henniker New Hampshire zip code has a center Longitude / Latitude point (the Henniker center is -71.822402954102 / 43.179698944092). For your convenience we have also indicated if that zip code in Henniker observes Daylight Savings time.