Below is a list of Rockingham County NH zip codes. For your research we have also included Rockingham County Area Code, Time Zone, UTC and the local County FIPS Code. Each Rockingham County New Hampshire zip code has a center Longitude / Latitude point (the Rockingham County center is -71.047096252441 / 42.971900939941). For your convenience we have also indicated if that zip code in Rockingham County observes Daylight Savings time.