Oskaloosa Flag

Oskaloosa

County Seat:
Yes
Area (mi²):
0.994
State:
Kansas

Oskaloosa is a city located in Jefferson County, Kansas. Oskaloosa has a 2026 population of 1,060. It is also the county seat of Jefferson County. Oskaloosa is currently declining at a rate of -0.56% annually and its population has decreased by -3.46% since the most recent census, which recorded a population of 1,098 in 2020.

The median household income in Oskaloosa is $83,750 with a poverty rate of 5.66%. The median age in Oskaloosa is 38.9 years: 37.9 years for males, and 40.4 years for females. For every 100 females there are 96.6 males.

1.1K
Total Population
1,067
Density (mi²)
-6 -0.56%
Growth

Oskaloosa Population

Oskaloosa Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,060-6-0.56%
20251,066-7-0.65%
20241,073-6-0.56%
20231,079-4-0.37%
20221,083-12-1.1%
20211,095-3-0.27%
20201,098-3-0.27%
20191,06550.47%
20181,060-7-0.66%
20171,067-2-0.19%
20161,069-5-0.47%
20151,074-3-0.28%
20141,077-3-0.28%
20131,080-8-0.74%
20121,088-6-0.55%
20111,094-19-1.71%
20101,11000%

Median Age

Overall: 38.9 years
Female: 40.4 years
Male: 37.9 years

Oskaloosa Adults

There are 859 adults, (197 of whom are seniors) in Oskaloosa.

Sex Ratio

Female: 566 (50.9%)
Male: 547 (49.1%)

Demographics

The racial composition of Oskaloosa includes 86.34% White, 4.22% other race, and smaller percentages for Native American, Asian, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White96186.34%
Two or more races938.36%
Other race474.22%
Native American90.81%
Asian20.18%
Black or African American10.09%
Race
Population ↓
Percentage (of total)
Two or more races353.14%
Other race151.35%
White50.45%
Race
Population ↓
Percentage (of total)
White95685.89%
Two or more races585.21%
Other race322.88%
Native American90.81%
Asian20.18%
Black or African American10.09%

Oskaloosa Marital Status

Economics and Income Statistics

Oskaloosa 's average per capita income is $49,143. Household income levels show a median of $83,750. The poverty rate stands at 5.66%.

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$103,333-
Families$94,643$119,632
Households$83,750$101,875
Non Families$34,375$55,962

$49,143

Average Income

$83,750

Median Household Income

5.66%

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)