Jefferson township

County:: Greene County
County Seat:: No
Area (mi²):: 25.384
State:: Iowa

Jefferson township is located in Greene County, Iowa. Jefferson township has a 2025 population of 4,373. Jefferson 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 Jefferson township is $166,733 with a poverty rate of 4.11%. The median age in Jefferson township is 46.6 years: 46.9 years for males, and 46.3 years for females.

Demographics

The racial composition of Jefferson township includes 92.09% White, and smaller percentages for Asian, Black or African American, Native American, other race, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Other race

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	4,027	92.09%
Two or more races	170	3.89%
Asian	114	2.61%
Black or African American	41	0.94%
Native American	11	0.25%
Other race	10	0.23%
Native Hawaiian or Pacific Islander	0	0%

Jefferson township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Jefferson township's average per capita income is $67,824. Household income levels show a median of $124,665. The poverty rate stands at 4.11%.

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	$155,898	-
Families	$148,533	$191,184
Households	$124,665	$166,733
Non Families	$61,875	$74,330

$67,824

Average Income

$124,665

Median Household Income

4.11%

Poverty Rate