St. Elmo, IL
Population 1,401 · Illinois
About St. Elmo, IL
St. Elmo is a small community in Illinois with a population of 1,401 residents. The median household income is $47,115 per year, which is below the national average. The median age in St. Elmo is 37.6 years.
Housing in St. Elmo has a median home value of $80,300 and median monthly rent of $759. Of the 561 total housing units, the majority are owner-occupied, with 413 owner-occupied and 81 renter-occupied units.
The unemployment rate in St. Elmo is 4.5% and the poverty rate is 23.7%. 8.2% of residents hold a bachelor's degree or higher. The average commute time is 23.1 minutes.
Cost of Living in St. Elmo, IL
Compared to national averages, St. Elmo has a median household income of $47,115 (37% below the national median of $75,149). Home values average $80,300, which is 67% below the national median. Monthly rent at $759 is 35% below the US average of $1,163. Within Illinois, St. Elmo's income is 37% below the state average of $75,072, and home values are 52% below the state median of $165,779.
Why Live in St. Elmo, IL?
St. Elmo offers affordable housing with a median home value of $80,300, below the US average of $244,900, and rent that’s lower than the national average at $759/month, and short commute times averaging just 23.1 minutes.
Potential considerations include median household income ($47,115) that falls below the national average. However, St. Elmo’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
St. Elmo has a population of 1,401 with a median age of 37.6 years. Compare St. Elmo with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near St. Elmo
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Walnut | 1,402 | $62,019 | $94,700 | Compare |
| Palestine | 1,396 | $60,000 | $75,800 | Compare |
| Arbury Hills | 1,408 | $103,456 | $225,600 | Compare |
| Ladd | 1,393 | $73,646 | $123,600 | Compare |
| Toulon | 1,390 | $51,316 | $96,100 | Compare |
| Waterman | 1,419 | $97,386 | $212,900 | Compare |
| Mazon | 1,424 | $76,458 | $203,100 | Compare |
| Cerro Gordo | 1,426 | $69,118 | $108,000 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about St. Elmo
What is the population of St. Elmo, IL?
The population of St. Elmo, IL is 1,401 according to the latest Census data.
What is the median household income in St. Elmo?
The median household income in St. Elmo, IL is $47,115 per year.
What is the median home value in St. Elmo?
The median home value in St. Elmo, IL is $80,300.
What is the average rent in St. Elmo?
The median monthly rent in St. Elmo, IL is $759.
What is the unemployment rate in St. Elmo?
The unemployment rate in St. Elmo, IL is 4.5%.