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 and multiracial populations.

Population by Race

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%

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