Portsmouth is a city in Rockingham County, New Hampshire, United States. At the 2020 census it had a population of 21,956. A historic seaport and popular summer tourist destination on the Piscataqua River bordering the state of Maine, Portsmouth was formerly the home of the Strategic Air Command's Pease Air Force Base, since converted to Portsmouth International Airport at Pease.
AdFind Discounts on the Best PortsmouthNh Waterfront Hotels. Tripadvisor Helps You Spend Less. Tripadvisor Always Has Low Prices on Hotels in Portsmouth. Spend Less Here.
AdPortsmouthNew Hampshire? Discover and book online to make your next trip unforgettable. The Best Portsmouth, New Hampshire Tours and Things to Do in 2025 - Free Cancellation