St. Olaf Flag

St. Olaf

County:
Clayton County
County Seat:
No
Area (mi²):
0.241
State:
Iowa

St. Olaf is a city located in Clayton County, Iowa. St. Olaf has a 2026 population of 101. St. Olaf is currently declining at a rate of 0% annually and its population has decreased by -2.88% since the most recent census, which recorded a population of 104 in 2020.

The median household income in St. Olaf is $98,125 with a poverty rate of 8.11%. The median age in St. Olaf is 51.5 years: 49 years for males, and 54.7 years for females. For every 100 females there are 137.5 males.

101
Total Population
419
Density (mi²)

St. Olaf Population

St. Olaf Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610100%
2025101-1-0.98%
2024102-1-0.97%
202310300%
2022103-1-0.96%
202110400%
202010400%
2019100-1-0.99%
2018101-1-0.98%
201710200%
201610200%
2015102-4-3.77%
2014106-1-0.93%
2013107-3-2.73%
201211021.85%
201110800%
201010800%

Median Age

Overall: 51.5 years
Female: 54.7 years
Male: 49 years

St. Olaf Adults

There are 69 adults, (13 of whom are seniors) in St. Olaf.

Sex Ratio

Female: 32 (42.1%)
Male: 44 (57.9%)

Demographics

The racial composition of St. Olaf includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White76100%
Race
Population ↓
Percentage (of total)
White76100%

St. Olaf Marital Status

Economics and Income Statistics

St. Olaf 's average per capita income is $42,500. Household income levels show a median of $98,125. The poverty rate stands at 8.11%.

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$116,250-
Families$111,250$104,822
Households$98,125$92,108
Non Families$51,500$62,508

$42,500

Average Income

$98,125

Median Household Income

8.11%

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)