Portsmouth, IA demographics:
population, income, and more

Total population
204
2.0% year-over-year change
Median household income
$80,781/yr
1.4% year-over-year change
Housing units
107
1.9% year-over-year change

Portsmouth population

How many people live in Portsmouth

Portsmouth is home to 204 residents, according to the most recent Census data. Gender-wise, 47.1% of Portsmouth locals are male, and 52.9% are female.

Total population
204
2.0% year-over-year change
Gender ratio
Male
47.1%
96
Female
52.9%
108
Value Percent YoY change
Male 96 47.1% 5.5%
Female 108 52.9% -0.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Portsmouth is 47, with the population distributed as follows: about 22.1% are children under 15, then 2.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 23.5% of the population, while another 36.3% fall into the 45 to 64 bracket. Finally, around 15.7% are 65 or older.

Median age
47.3
Age breakdown
Under 15
22.1%
15 to 24
2.4%
25 to 44
23.5%
45 to 64
36.3%
Over 65
15.7%
Value Percent YoY change
Under 15 45 22.1% -2.2%
15 to 24 5 2.4% 0.0%
25 to 44 48 23.5% -7.7%
45 to 64 74 36.3% 7.2%
Over 65 32 15.7% 14.3%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

At the same time, 0.5% of residents are non-citizens. There’s also a share of 8.3% that includes residents with two or more races.

Citizenship
U.S.-born citizens
99.5%
Non-U.S.-born citizens
0%
Non-citizens
0.5%
Value Percent YoY change
U.S.-born citizens 203 99.5% 1.5%
Non-citizens 1 0.5% N/A
Racial breakdown
White
91.7%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
8.3%
Other
0%
Value Percent
White 187 91.7%
Two or more races 17 8.3%

Households in Portsmouth

A peek inside Portsmouth households

Portsmouth has 103 households, with an average of 2 members in each. Of these, 58.2% are families, while the remaining 41.8% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
103
5.1% year-over-year change
Average people per household
2
Non-family households
43
Family households
60
Value Percent YoY change
Non-family households 43 41.8% 26.5%
Family households 60 58.2% -6.2%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Portsmouth

The housing landscape of Portsmouth

Portsmouth's housing consists of 107 units, with 96.3% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.9% of the housing landscape.

Housing units
107
1.9% year-over-year change
Housing types
Value Percent
1 unit, detached 103 96.3%
3 or 4 units 1 0.9%
50 or more units 2 1.9%
Mobile home 1 0.9%
Homes built since 2020
2
% year-over-year change

The age of buildings in Portsmouth

In Portsmouth, the median construction year is 1956. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 47 43.9% 20.5%
Built between 1950 and 1959 11 10.3% -35.3%
Built between 1960 and 1969 10 9.4% -33.3%
Built between 1970 and 1979 13 12.2% 62.5%
Built between 1980 and 1989 4 3.7% 33.3%
Built between 1990 and 1999 2 1.9% -50.0%
Built between 2000 and 2009 18 16.8% 5.9%
Built in 2020 or later 2 1.9% N/A
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Portsmouth occupancy rates

Out of the 103 occupied housing units in Portsmouth, 93.2% are owner-occupied, while 6.8% are lived in by tenants. Meanwhile, 3.7% of all homes on the local market sit vacant.

Occupied housing units
103
5.1% year-over-year change
Occupancy breakdown
Renter occupied
7
Owner occupied
96
Value Percent YoY
change
Renter occupied 7 6.8% 16.7%
Owner occupied 96 93.2% 4.3%
Unoccupied housing units
3.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Portsmouth housing costs

Housing costs in Portsmouth come to a median of $917 per month, while tenants specifically pay a median gross rent of $769.

Median housing costs per month
$917/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Portsmouth
$769/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Portsmouth

Portsmouth education at a glance

About 38.8% of the population in Portsmouth went to high school, while 42% pursued college studies. Another 5.1% earned an associate degree and 7.6% hold a bachelor’s. Meanwhile, 2.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 6 3.8% 20.0%
High school diploma 61 38.8% 19.6%
College diploma 66 42% -1.5%
Associate degree 8 5.1% -38.5%
Bachelor's degree 12 7.6% 0.0%
Graduate degree 4 2.6% 0.0%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Portsmouth

How much people earn in Portsmouth

The average annual household income in Portsmouth was $83,483 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -4.1% change from the previous year. At the same time, the median income stood at $80,781, reflecting a +1.4% shift over the same period.

Average household income in Portsmouth
$83,483/year
-4.1% year-over-year change
Median household income in Portsmouth
$80,781/year
1.4% year-over-year change

Portsmouth income by age

In Portsmouth, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $83,333. Those with someone between 45 and 64 in charge, often well established professionally, earn $95,625 overall. Overall, 95.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $83,333 3.4%
45 - 64 $95,625 0.7%
Above poverty level
194
Below poverty level
10
Value Percent YoY
change
Above poverty level 194 95.1% 0.0%
Below poverty level 10 4.9% 66.7%

Employment in Portsmouth

Workforce and job types in Portsmouth

The job market in Portsmouth is powered by 124 working residents, spread across a range of industries and roles. 59.7% of the working population are employed in professional or administrative positions, while 40.3% are in hands-on or service-based jobs. Also, 17.7% run their own businesses, 54.8% are employed by private companies, and 24.2% work in the public sector.

Workforce demographics

Working population
124
-2.4% year-over-year change
White collar
74
Blue collar
50
Value Percent YoY change
White collar 74 59.7% -3.9%
Blue collar 50 40.3% 0.0%
Employer type
Self employees
17.7%
Private companies
54.8%
Governmental workers
24.2%
Not for profit companies
3.2%
Value Percent YoY change
Self employees 22 17.7% 4.8%
Private companies 68 54.8% 4.6%
Governmental workers 30 24.2% -14.3%
Not for profit companies 4 3.2% -33.3%

Transportation in Portsmouth

How people get around in Portsmouth

Commuting methods vary: 78.2% of residents travel by personal vehicle and 11.3% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 97 78.2% -1.0%
Walk 14 11.3% -12.5%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Portsmouth by zipcode?

Zipcode Population Number of households Median income Average income
51565 516 275 $103,257 $92,405

Explore more communities

FAQs about Portsmouth demographics 

What is the total population of Portsmouth?

Portsmouth has a total population of 204 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.0% compared to a year ago.

What is the gender ratio in Portsmouth?

The gender ratio in Portsmouth is as follows:
  • 47.1% males (96 residents)
  • 52.9% females (108 residents)

What is the median age in Portsmouth?

The median age in Portsmouth is 47.3.

What is the age distribution of the population in Portsmouth?

The age distribution in Portsmouth is as follows:
  • Under 15: 22.1% (45 residents)
  • Ages 15-24: 2.4% (5 residents)
  • Ages 25-44: 23.5% (48 residents)
  • Ages 45-64: 36.3% (74 residents)
  • Over 65: 15.7% (32 residents)

What is the racial and ethnic makeup of Portsmouth?

The racial and ethnic makeup of Portsmouth is as follows:
  • White: 91.7% (187 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 8.3% (17 residents)
  • Other: 0% (0 residents)

What percentage of the population in Portsmouth are U.S.-born citizens?

U.S.-born citizens represent 99.5% of the population in Portsmouth.

How many housing units are there in Portsmouth?

There are 107 housing units in Portsmouth, reflecting a +1.9% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Portsmouth and what is the average household size?

Portsmouth has a total of 103 households, with an average of 2 people in each.

What is the median household income in Portsmouth?

Portsmouth has a median household income of $80,781, representing a +1.4% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Portsmouth?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 59.7% (74 residents)
  • Blue-collar workers: 40.3% (50 residents)

Places of employment:
  • Self-employed: 17.7% (22 residents)
  • Private companies: 54.8% (68 residents)
  • Governmental workers: 24.2% (30 residents)
  • Not-for-profit companies: 3.2% (4 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025