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.

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)
White	10,653	92.7%
Two or more races	290	2.52%
Black or African American	228	1.98%
Asian	199	1.73%
Other race	93	0.81%
Native American	29	0.25%

Oskaloosa Marital Status

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