Portsmouth Flag

Portsmouth

County Seat:
No
Area (mi²):
15.661
State:
New Hampshire

Portsmouth is a city located in Rockingham County, New Hampshire. Portsmouth has a 2026 population of 22,938. Portsmouth is currently growing at a rate of 0.77% annually and its population has increased by 4.31% since the most recent census, which recorded a population of 21,991 in 2020.

22.9K
Total Population
1,465
Density (mi²)
175 0.77%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)