Below is a list of Hillsborough County NH zip codes. For your research we have also included Hillsborough County Area Code, Time Zone, UTC and the local County FIPS Code. Each Hillsborough County New Hampshire zip code has a center Longitude / Latitude point (the Hillsborough County center is -71.63500213623 / 42.895999908447). For your convenience we have also indicated if that zip code in Hillsborough County observes Daylight Savings time.