Oskaloosa Flag

Oskaloosa

County:
Mahaska County
County Seat:
Yes
Area (mi²):
8.05
State:
Iowa

Oskaloosa is a city located in Mahaska County, Iowa. Oskaloosa has a 2025 population of 11,388. It is also the county seat of Mahaska County. Oskaloosa is currently declining at a rate of -0.26% annually and its population has decreased by -1.29% since the most recent census, which recorded a population of 11,537 in 2020.

The average household income in Oskaloosa is $82,124 with a poverty rate of 16.08%.The median age in Oskaloosa is 37.9 years: 35.7 years for males, and 39.8 years for females.

11.4K
Total Population
1,415
Density (mi²)
-30 -0.26%
Growth

Oskaloosa Population

Oskaloosa Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Oskaloosa includes 92.7% White, and smaller percentages for Two or more races, Black or African American, Asian, other race, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White10,65392.7%
Two or more races2902.52%
Black or African American2281.98%
Asian1991.73%
Other race930.81%
Native American290.25%

Oskaloosa Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oskaloosa's average per capita income is $43,692. Household income levels show a median of $62,172. The poverty rate stands at 16.08%.

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$97,639-
Families$85,590$102,825
Households$62,172$82,124
Non Families$33,750$42,878

$43,692

Average Income

$62,172

Median Household Income

16.08%

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)