Below is a list of Brentwood NH zip codes. For your research we have also included Brentwood Area Code, Time Zone, UTC and the local Rockingham County FIPS Code. Each Brentwood New Hampshire zip code has a center Longitude / Latitude point (the Brentwood center is -70.992301940918 / 42.977500915527). For your convenience we have also indicated if that zip code in Brentwood observes Daylight Savings time.