St. John township

County:: Harrison County
County Seat:: No
Area (mi²):: 45.656
State:: Iowa

St. John township is located in Harrison County, Iowa. St. John township has a 2025 population of 4,085. St. John 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 St. John township is $88,082 with a poverty rate of 7.79%. The median age in St. John township is 41.8 years: 42.1 years for males, and 41.6 years for females.

Demographics

The racial composition of St. John township includes 97.01% White, and smaller percentages for Two or more races, Asian, Native American, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Native American

Other race

Black or African American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,963	97.01%
Two or more races	101	2.47%
Asian	11	0.27%
Native American	6	0.15%
Other race	4	0.1%
Black or African American	0	0%
Native Hawaiian or Pacific Islander	0	0%

St. John township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. John township's average per capita income is $51,586. Household income levels show a median of $76,942. The poverty rate stands at 7.79%.

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	$103,438	-
Families	$88,860	$105,965
Households	$76,942	$88,082
Non Families	$40,500	$51,277

$51,586

Average Income

$76,942

Median Household Income

7.79%

Poverty Rate