Assumption

County:: Christian County
County Seat:: No
Area (mi²):: 0.99
State:: Illinois

Assumption is a city located in Christian County, Illinois. Assumption has a 2025 population of 1,091. Assumption is currently declining at a rate of -1% annually and its population has decreased by -4.72% since the most recent census, which recorded a population of 1,145 in 2020.

The average household income in Assumption is $61,198 with a poverty rate of 11.32%.The median age in Assumption is 34.3 years: 35.7 years for males, and 29.9 years for females.

Demographics

The racial composition of Assumption includes 85.59% White, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	956	85.59%
Two or more races	130	11.64%
Black or African American	27	2.42%
Native Hawaiian or Pacific Islander	3	0.27%
Native American	1	0.09%

Assumption Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Assumption's average per capita income is $49,167. Household income levels show a median of $55,764. The poverty rate stands at 11.32%.

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	$80,714	-
Families	$68,194	$71,715
Households	$55,764	$61,198
Non Families	$47,679	$50,179

$49,167

Average Income

$55,764

Median Household Income

11.32%

Poverty Rate