Portsmouth Population 2026
Portsmouth has a population of 21,530, making it the #2205 biggest city in 🇺🇸 United States, located in New Hampshire. It is about 409× smaller than New York City, the country's biggest city.
Population (city proper)
21,530
Rank in United States
#2205
Coordinates
43.08°N, 70.76°W
~6 m elevation · America/New_York
Distance to capital (Washington)
702 km
436 miles, straight line
Other big cities in New Hampshire
| City | Population | Rank in United States |
|---|---|---|
| Manchester | 110,229 | #280 |
| Nashua | 87,970 | #392 |
| Concord | 43,976 | #997 |
| East Concord | 42,605 | #1037 |
| Derry Village | 34,539 | #1324 |
| Dover | 30,880 | #1493 |
| Rochester | 30,038 | #1549 |
| Salem | 29,549 | #1576 |
Cities near Portsmouth
FAQ
What is the population of Portsmouth?
Portsmouth has a population of 21,530 (city proper, latest official figure via GeoNames), making it the #2205 biggest city in United States.
What state is Portsmouth in?
Portsmouth is located in New Hampshire, United States.
Is Portsmouth the capital of United States?
No, the capital of United States is Washington D.C., about 702 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.
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