St. Elmo city, Illinois Demographics & Population 2026

Population Overview

St. Elmo city is a small community located in Illinois. The total population is 1,401. It ranks as the 605th most populous out of 1,445 cities and towns in Illinois.

Age Demographics

The median age in St. Elmo city is 37.6 years. This is 3% lower than the state median of 38.9 years.

Economy, Income & Housing

The median household income in St. Elmo city is $47,115. This is 42% lower than the state median of $81,702. Compared to the national median of $78,538, household income here is 40% lower. The poverty rate stands at 23.7%. This is 102% higher than the state poverty rate of 11.7%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 4.5%. This is 22% lower than the state rate of 5.8%. The median home value is $80,300. Housing costs are 68% lower than the state median of $250,500. With a home-value-to-income ratio of just 1.7x, St. Elmo city is one of the most affordable housing markets in the area. 83.6% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 66.8%.

Race & Ethnicity

St. Elmo city has a predominantly White (non-Hispanic) population, comprising 95.9% of all residents. Hispanic or Latino residents account for 1.0%. The White (non-Hispanic) population is significantly higher than the state average (95.9% vs 58.8%). The Black or African American population (0.6%) is well below the state average of 13.6%. The Hispanic or Latino population (1.0%) is well below the state average of 18.5%.

Education

8.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 78% lower than the state rate of 37.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 84.4%.

Data Sources & Methodology

All demographic data for St. Elmo city, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. For official data, visit data.census.gov.