Portsmouth, New Hampshire Population 2021

22,103
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Portsmouth is a city located in Rockingham County New Hampshire. With a 2020 population of 22,103, it is the 7th largest city in New Hampshire and the 1714th largest city in the United States . Portsmouth is currently growing at a rate of 0.40% annually and its population has increased by 6.37% since the most recent census, which recorded a population of 20,779 in 2010. Portsmouth reached it's highest population of 26,254 in 1980. Spanning over 17 miles, Portsmouth has a population density of 1,412 people per square mile.

The average household income in Portsmouth is $112,839 with a poverty rate of 6.67%. The median rental costs in recent years comes to $1,305 per month, and the median house value is $425,600. The median age in Portsmouth is 39.8 years, 37.4 years for males, and 41.5 years for females.

Portsmouth Demographics

According to the most recent ACS, the racial composition of Portsmouth was:

  • White: 90.04%
  • Asian: 4.81%
  • Black or African American: 2.48%
  • Two or more races: 2.31%
  • Other race: 0.28%
  • Native American: 0.07%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Portsmouth, New Hampshire is 22,103 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 21,839.The last official US Census in 2010 recorded the population at 20,779.

Portsmouth, New Hampshire Population 2021

Population by Race

Race Population Percentage
White19,60790.04%
Asian1,0484.81%
Black or African American5402.48%
Two or More Races5042.31%
Some Other Race610.28%
American Indian and Alaska Native150.07%
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Portsmouth Population by Race

Portsmouth Population Pyramid $2021

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Portsmouth Median Age

39.8


Total

37.4


Male

41.5


Female

Portsmouth Adults

There are 18,449 adults, (3,779 of whom are seniors) in Portsmouth.

Portsmouth Age Dependency

48.4

Age Dependency Ratio

25.8

Old Age Dependency Ratio

22.7

Child Dependency Ratio

Portsmouth Sex Ratio

Female

11,069

50.83%

Male

10,706

49.17%

Portsmouth Population by Age

Portsmouth Renter vs Owner Occupied by Household Type

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Portsmouth Household Types

Type Owner Renter
Married77.8%22.2%
All52%48%
Female44.2%55.8%
Male35.4%64.6%
Non Family33.4%66.6%

52.0%

Rate of Home Ownership

Portsmouth Households and Families

Type Count Average Size Owned
All10,0632.0752
Non Family4,9571.3833.4
Married4,0292.8377.8
Female7492.5444.2
Male3282.1335.4

2.69

Average Family Size

2.07

Average Household Size

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Portsmouth Households by Type

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Education Attained Count Percentage
Less Than 9th Grade2111.27%
9th to 12th Grade4822.89%
High School Graduate2,71816.32%
Some College2,29413.77%
Associates Degree1,1997.20%
Bachelors Degree5,77634.67%
Graduate Degree3,97923.88%
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Portsmouth Educational Attainment by Sex (over 25)

Portsmouth Educational Attainment by Race

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Race Total High School Bachelors
White14,90614,3228,671
Asian798766569
Hispanic402342250
Black366332134
2+ Races247245159
Other Race272719

The highest rate of high school graduation is among other race people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 71.30%.

Portsmouth Educational Attainment by Race

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Name Average Male Female
Overall$55,654$62,944$49,043
Less Than 9th Grade$23,194$$24,630
High School Graduate$36,174$31,789$40,788
Some College$46,075$47,821$44,136
Bachelors Degree$63,067$74,679$49,814
Graduate Degree$77,339$104,239$65,740

$55,654

Average Earnings

$62,944

Average Male

$49,043

Average Female

Portsmouth Earnings by Educational Attainment

Portsmouth Language by Age

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Portsmouth Language

90.60% of Portsmouth residents speak only English, while 9.40% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 4.97% of the population.

Portsmouth Language

Portsmouth Poverty by Race

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Name Total In Poverty Poverty Rate
White18,2951,1176.11%
Hispanic62116827.05%
Black4787114.85%
Other593254.24%
Asian1,033252.42%
Multiple457122.63%

6.67%

Overall Poverty Rate

6.23%

Male Poverty Rate

7.10%

Female Poverty Rate

Poverty in Portsmouth

The race most likely to be in poverty in Portsmouth is Other, with 54.24% below the poverty level.

The race least likely to be in poverty in Portsmouth is Asian, with 2.42% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.10%. Among those working part-time, it was 9.47%, and for those that did not work, the poverty rate was 15.64%.

Portsmouth Poverty

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Name Poverty
Less Than 9th Grade42.41%
Some College9.32%
High School8.78%
Bachelors or Greater2.18%

Portsmouth Poverty Rate by Education

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Rate Poverty
Male Unemployed25.52%
Female Unemployed16.41%
Male Employed3.51%
Female Employed3.05%

Portsmouth Poverty Rate by Employment Status and Sex

Portsmouth Income by Household Type

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Name Median Mean
Households$83,923$112,839
Families$116,200$145,320
Married Families$123,460-
Non Families$62,070$77,603
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Income by Household Type

Portsmouth Marital Status

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Marriage Rates

45.4%

Overall Marriage Rate

45.2%

Male Marriage Rate

45.6%

Female Marriage Rate

Portsmouth Married by Age and Sex

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Portsmouth Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Portsmouth Marital Status by Race

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Portsmouth Marital Status

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1,581

Number of Veterans

1,411

Male Veterans

170

Female Veterans

War Veterans
Vietnam702
Second Gulf War325
First Gulf War307
Korea214
World War II62

Portsmouth Veterans by War

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Age Group Veterans
75+490
65 to 74439
35 to 54263
55 to 64229
18 to 34160

Portsmouth Veterans by Age

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Name Veterans % of Total
White1,4849.09%
Black8521.04%
Hispanic315.93%
2+ Races124.21%

Portsmouth Veterans by Race

Portsmouth Veterans by Education

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6.47%

Veteran Poverty Rate

17.19%

Veteran Disability Rate

Portsmouth Veterans by Education

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72.9%

Labor Force Participation

68.2%

Employment Rate

2.1%

Unemployment Rate

Portsmouth Employment by Age

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Portsmouth Employment by Race

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Portsmouth Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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34.92%

Born in Portsmouth

92.36%

Native Born

7.64%

Foreign Born

4.38%

Non Citizen

3.26%

Naturalized

Place of Birth

92.36% of Portsmouth residents were born in the United States, with 34.92% having been born in New Hampshire. 4.38% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Portsmouth Place of Birth

Year Population Growth Annual Growth Rate
202122,103880.40%
202022,015880.40%
201921,927880.40%
201821,839150.07%
201721,8241760.81%
201621,64820.01%
201521,646-56-0.26%
201421,7022371.10%
201321,465470.22%
201221,4181300.61%
201121,288650.31%
201021,2234390.21%
200020,784-5,141-2.19%
199025,925-329-0.13%
198026,2545370.21%
197025,717-116-0.04%
196025,8337,0033.21%
195018,8304,0092.42%
194014,8213260.22%
193014,4959260.66%
192013,5692,3001.87%
191011,2696320.58%
190010,6378100.80%
18909,8271370.14%
18809,6904790.51%
18709,211-124-0.13%
18609,335-403-0.42%
18509,7381,8512.13%
18407,887-139-0.17%
18308,0266990.92%
18207,3273930.55%
18106,9341,5952.65%
18005,3396191.24%
17904,7200.00%

Portsmouth Population by Year