St. Mary township

County:: Hancock County
County Seat:: No
Area (mi²):: 36.975
State:: Illinois

St. Mary township is located in Hancock County, Illinois. St. Mary township has a 2025 population of 547. St. Mary township is currently declining at a rate of -0.18% annually and its population has decreased by -2.15% since the most recent census, which recorded a population of 559 in 2020.

The average household income in St. Mary township is $65,608 with a poverty rate of 21.93%.The median age in St. Mary township is 52.8 years: 49.4 years for males, and 55.2 years for females.

Demographics

The racial composition of St. Mary township includes 95.76% White, and smaller percentages for Black or African American, Two or more races, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	655	95.76%
Black or African American	14	2.05%
Two or more races	12	1.75%
Other race	3	0.44%

St. Mary township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Mary township's average per capita income is $40,703. Household income levels show a median of $52,727. The poverty rate stands at 21.93%.

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	$93,600	-
Families	$80,833	$80,299
Households	$52,727	$65,608
Non Families	$24,375	$32,440

$40,703

Average Income

$52,727

Median Household Income

21.93%

Poverty Rate