New Hampshire Rockingham County
Portsmouth
A city in Rockingham County, New Hampshire — population 21,557 as of 2020.
stops being your city.
Portsmouth takes over news, events and the map.
News around Rockingham County
There is a flood alert for Thursday, October 1st in Hampton for a 10.4 ft high tide, which is expected to peak around 3:00 PM.
Public Safety
Sample Ballots and Absentee Ballots Available
Sample Ballots and Absentee Ballots are now available for the November 3, 2026 election.
Government & Civic
5th Annual Londonderry Seniors Informational Expo – October 3
Join the Londonderry Senior Resource Committee for the 5th Annual Londonderry Seniors Informational Expo on Saturday, October 3, 2026, from 10:00 a.m. to 1:00 p.m. at Londonderry High School.
EventsIn and around Portsmouth
See & do
+175 more on the mapEat, drink & stay
+336 more on the mapShops & services
+570 more on the mapMusicians & bands near Portsmouth →
Explore the Greater Boston metro →
Portsmouth changes faster than we can keep up.
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Portsmouth by the numbers
- Area
- 15.66 sq mi (40.56 km²), 1.16 sq mi water
- Median age
- 42.9
- Households
- 10,902
- Persons per household
- 2
- Median household income
- $106,219
- Median house value
- $688,500
- Office
- MAYOR
- Address
- 1 JUNKINS AVE, PORTSMOUTH, NH 03801