St. Elmo Flag

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.

1.2K
Total Population
829
Density (mi²)
-7 -0.57%
Growth

St. Elmo Population

St. Elmo Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of St. Elmo includes 96.93% White, and smaller percentages for Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander, other race and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Other race

Race
Population
Percentage (of total)
White1,35896.93%
Two or more races342.43%
Black or African American90.64%
Native American00%
Asian00%
Native Hawaiian or Pacific Islander00%
Other race00%

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

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)