Town guide
Portsmouth
New Hampshire · NH
About Portsmouth
City in New Hampshire, United States1630Established
21,956Population
16.8 sq miArea
20 ftElevation
Portsmouth is a city in Rockingham County, New Hampshire, United States. It had a population of 21,956 at the 2020 census. A historic seaport and popular summer tourist destination on the Piscataqua River bordering the state of Maine, Portsmouth was formerly the home of the Pease Air Force Base, since converted to Portsmouth International Airport at Pease.
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ZIP code03801, 03802, 03803