Jefferson township

County:: Greene County
County Seat:: No
Area (mi²):: 30.118
State:: Iowa

Jefferson township is located in Greene County, Iowa. Jefferson township has a 2025 population of 14,291. 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 $165,232 with a poverty rate of 5.83%. The median age in Jefferson township is 37.5 years: 35.5 years for males, and 39.1 years for females.

Demographics

The racial composition of Jefferson township includes 90.92% White, 3.96% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	12,993	90.92%
Asian	566	3.96%
Two or more races	510	3.57%
Black or African American	170	1.19%
Other race	42	0.29%
Native American	10	0.07%
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 $76,823. Household income levels show a median of $145,938. The poverty rate stands at 5.83%.

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	$166,250	-
Families	$160,833	$192,934
Households	$145,938	$165,232
Non Families	$54,619	$85,597

$76,823

Average Income

$145,938

Median Household Income

5.83%

Poverty Rate