St. Clair township

County:: Benton County
County Seat:: No
Area (mi²):: 35.873
State:: Iowa

St. Clair township is located in Benton County, Iowa. St. Clair township has a 2025 population of 392. St. Clair 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. Clair township is $93,824 with a poverty rate of 5.36%.The median age in St. Clair township is 41.5 years: 41.9 years for males, and 30.7 years for females.

Demographics

The racial composition of St. Clair township includes 98.21% White, and smaller percentages for Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	385	98.21%
Native American	7	1.79%

St. Clair township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Clair township's average per capita income is $70,156. Household income levels show a median of $115,577. The poverty rate stands at 5.36%.

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
Families	$116,490	$103,779
Married Families	$116,346	-
Households	$115,577	$93,824
Non Families	-	-

$70,156

Average Income

$115,577

Median Household Income

5.36%

Poverty Rate