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 2026 population of 1,231. St. Elmo is currently declining at a rate of -0.49% annually and its population has decreased by -2.84% since the most recent census, which recorded a population of 1,267 in 2020.

The median household income in St. Elmo is $45,294 with a poverty rate of 27.82%. The median age in St. Elmo is 40.1 years: 37.8 years for males, and 40.7 years for females. For every 100 females there are 92.2 males.

1.2K
Total Population
830
Density (mi²)
-6 -0.49%
Growth

St. Elmo Population

St. Elmo Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,231-6-0.49%
20251,237-6-0.48%
20241,243-5-0.4%
20231,248-5-0.4%
20221,253-12-0.95%
20211,265-2-0.16%
20201,267-1-0.08%
20191,37420.15%
20181,372-13-0.94%
20171,385-5-0.36%
20161,390-13-0.93%
20151,403-4-0.28%
20141,407-13-0.92%
20131,42000%
20121,420-11-0.77%
20111,43150.35%
20101,428-1-0.07%

Median Age

Overall: 40.1 years
Female: 40.7 years
Male: 37.8 years

St. Elmo Adults

There are 959 adults, (227 of whom are seniors) in St. Elmo.

Sex Ratio

Female: 654 (52%)
Male: 603 (48%)

Demographics

The racial composition of St. Elmo includes 95.54% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,20195.54%
Two or more races463.66%
Black or African American100.8%
Race
Population ↓
Percentage (of total)
White131.03%
Race
Population ↓
Percentage (of total)
White1,18894.51%
Two or more races463.66%
Black or African American100.8%

St. Elmo Marital Status

Economics and Income Statistics

St. Elmo 's average per capita income is $37,964. Household income levels show a median of $45,294. The poverty rate stands at 27.82%.

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$72,031-
Families$65,938$66,747
Households$45,294$57,226
Non Families$26,667$45,295

$37,964

Average Income

$45,294

Median Household Income

27.82%

Poverty Rate

Nearby Cities

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)