Black Oak township

County:: Mahaska County
County Seat:: No
Area (mi²):: 32.837
State:: Iowa

Black Oak township is located in Mahaska County, Iowa. Black Oak township has a 2025 population of 583. Black Oak township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The average household income in Black Oak township is $111,108 with a poverty rate of 0.17%.The median age in Black Oak township is 48.1 years: 46.2 years for males, and 52.1 years for females.

Demographics

The racial composition of Black Oak township includes 98.97% White, and smaller percentages for Two or more races, Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	577	98.97%
Two or more races	4	0.69%
Asian	2	0.34%

Black Oak township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Black Oak township's average per capita income is $41,071. Household income levels show a median of $82,353. The poverty rate stands at 0.17%.

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	$93,438	-
Families	$92,734	$133,942
Households	$82,353	$111,108
Non Families	$36,141	$44,513

$41,071

Average Income

$82,353

Median Household Income

0.17%

Poverty Rate