Portsmouth demographics profile

StatisticPortsmouthNew HampshireNational
Population density (sq mi)1,37414191
Median age41.142.437.7
Male/Female ratio1.0:11.0:11.0:1
Married (15yrs & older)48%58%55%
Speak English90%92%79%
Speak Spanish2%2%13%
Portsmouth, NH has a population of 21,458 and is the 2,022nd largest city in the United States. The population density is 1,374 per sq mi which is 872% higher than the New Hampshire average and 1416% higher than the national average. The median age in Portsmouth is 41 which is approximately 3% lower than the New Hampshire average of 42. In Portsmouth, 48% of the population over 15 years of age are married, 90% speak English and 2% speak Spanish. 35% of Portsmouth residents were born in New Hampshire, 57% were born out of state, 1% were born outside of the United States and 7% were foreign born.

Did you know?

  • The population density in Portsmouth is 872% higher than New Hampshire.
  • The median age in Portsmouth is 3% lower than New Hampshire.
  • In Portsmouth 89.21% of the population is White.
  • In Portsmouth 2.61% of the population is African American.
  • In Portsmouth 4.16% of the population is Asian.

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Portsmouth population breakdown by race

RacePortsmouthNew HampshireNational
African American2.61%1.32%12.63%
American Indian0.02%0.16%0.82%
Native Hawaiian0.00%0.02%0.18%
Mixed race3.21%1.88%3.06%
Other race0.79%0.54%4.75%
In Portsmouth, 3.1% of people are of Hispanic or Latino origin.
Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

Languages spoken

Place of birth by citizenship

Household income distribution

Source of income

Portsmouth age breakdown

Marital status

Age of children in married couples

Source: The Portsmouth, NH demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).