St. Elmo

County:: Fayette County
County Seat:: No
Area (mi²):: 1.483
State:: Illinois

St. Elmo is a city located in Fayette County, Illinois. St. Elmo has a 2025 population of 1,230. St. Elmo is currently declining at a rate of -0.57% annually and its population has decreased by -2.92% since the most recent census, which recorded a population of 1,267 in 2020.

The average household income in St. Elmo is $60,154 with a poverty rate of 23.73%.The median age in St. Elmo is 37.6 years: 35.7 years for males, and 43.2 years for females.

Demographics

The racial composition of St. Elmo includes 96.93% White, and smaller percentages for Two or more races, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,358	96.93%
Two or more races	34	2.43%
Black or African American	9	0.64%

St. Elmo Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Elmo's average per capita income is $36,083. Household income levels show a median of $47,115. The poverty rate stands at 23.73%.

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	$70,250	-
Families	$61,250	$69,863
Households	$47,115	$60,154
Non Families	$30,625	$46,521

$36,083

Average Income

$47,115

Median Household Income

23.73%

Poverty Rate