Portsmouth Population 2026
Portsmouth has a population of 20,409, making it the #2325 biggest city in 🇺🇸 United States, located in Ohio. It is about 431× smaller than New York City, the country's biggest city.
Population (city proper)
20,409
Rank in United States
#2325
Coordinates
38.73°N, 83.00°W
~162 m elevation · America/New_York
Distance to capital (Washington)
517 km
321 miles, straight line
Other big cities in Ohio
Cities near Portsmouth
- Ashland21,108 people · ~42 km away
- Meads288,649 people · ~43 km away
- Huntington48,638 people · ~59 km away
- Chillicothe21,727 people · ~67 km away
- Athens25,044 people · ~102 km away
- Lancaster39,766 people · ~114 km away
FAQ
What is the population of Portsmouth?
Portsmouth has a population of 20,409 (city proper, latest official figure via GeoNames), making it the #2325 biggest city in United States.
What state is Portsmouth in?
Portsmouth is located in Ohio, United States.
Is Portsmouth the capital of United States?
No, the capital of United States is Washington D.C., about 517 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.
← All biggest cities in United States · United States population by year