Portsmouth Flag

Portsmouth

County:
Shelby County
County Seat:
No
Area (mi²):
0.307
State:
Iowa

Portsmouth is a city located in Shelby County, Iowa. Portsmouth has a 2025 population of 187 . Portsmouth is currently declining at a rate of 0% annually and its population has increased by 0.54% since the most recent census, which recorded a population of 186 in 2020.

The average household income in Portsmouth is $87,070 with a poverty rate of 3%. The median age in Portsmouth is 43.5 years: 45.5 years for males, and 37.3 years for females. For every 100 females there are 83.5 males.

187
Total Population
609
Density (mi²)

Portsmouth Population

Portsmouth Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Portsmouth includes 87% White, and smaller percentages for and multiracial populations.

Population by Race

White (87%)

Two or more races (13%)

Race
Population
Percentage (of total)
White17487%
Two or more races2613%

Portsmouth Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Portsmouth's average per capita income is $60,208. Household income levels show a median of $79,643. The poverty rate stands at 3%.

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$120,833-
Families$97,083$102,794
Households$79,643$87,070
Non Families$70,357$57,474

$60,208

Average Income

$79,643

Median Household Income

3%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)