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 and multiracial populations.

Population by Race

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%

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