Portsmouth

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

Portsmouth is a city located in Rockingham County, New Hampshire. Portsmouth has a 2025 population of 23,227. Portsmouth is currently growing at a rate of 1.07% annually and its population has increased by 5.62% since the most recent census, which recorded a population of 21,992 in 2020.

The average household income in Portsmouth is $143,256 with a poverty rate of 5.5%.The median age in Portsmouth is 42.4 years: 41.4 years for males, and 44.4 years for females.

Demographics

The racial composition of Portsmouth includes 87.63% White, 3.92% Asian, and smaller percentages for other race, Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	19,569	87.63%
Two or more races	1,054	4.72%
Asian	875	3.92%
Other race	578	2.59%
Black or African American	237	1.06%
Native Hawaiian or Pacific Islander	11	0.05%
Native American	8	0.04%

Portsmouth Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Portsmouth's average per capita income is $71,848. Household income levels show a median of $105,756. The poverty rate stands at 5.5%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$146,649	-
Families	$139,847	$181,396
Households	$105,756	$143,256
Non Families	$83,014	$103,482

$71,848

Average Income

$105,756

Median Household Income

5.5%

Poverty Rate