Portsmouth, NH Population

Overview

21,897

Total Population

42.2

Median age

52.45%

Female population %

90.6:100

Gender ratio (M:F)

25-29 years

Largest age group

48.3

Total dependency ratio

White

Largest racial group

493

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Portsmouth's population is old compared to the rest of the country:

The median age in Portsmouth is 42.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Portsmouth's population under 18 was 15.13%, compared to the 22.51% nationwide.
Portsmouth's elderly or the senior population (over 65 age) was 20.32% as compared to 16.04% nationwide.
Of the total population in Portsmouth, 12.27% were under the age of 15, 18.86% aged 15 to 29, 48.55% aged 30 to 64, 17.89% aged 65 to 84, and 2.43% were 85 years of age and older.

There are 1,075 more females than males in Portsmouth:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 52.45% females and 47.55% males in Portsmouth, NH.
The Portsmouth, NH gender ratio is 90.6:100 i.e. 90.6 men to 100 women (0.906).
For male population, the largest age group is 25-29 years with a population of 866.
For the female population, the largest age group is 25-29 years with a population of 1,182.

Portsmouth's population has become increasingly diverse:

Racial distribution of Portsmouth population: 88.76% are White, 1.37% are Black or African American, 4.98% are Asian, 1.50% are some other race and 3.40% are multiracial.
Portsmouth's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 493 is Hispanic or Latino (of any race), and 21,404 (97.75% of the total population) is Non-Hispanic.
The largest racial group in Portsmouth is White with a population of 19,436 (88.76% of the total population).

Portsmouth's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 22,713 in the year 2022
From 2000 to 2010, Portsmouth's population decreased by 52 (0.25%), as compared to the national growth of 9.63%.
From 2010 to 2020, Portsmouth's population increased by 1,217 (5.86%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Portsmouth's population was lowest in year 2008 at 20,577.