St. Elmo, Illinois

St. Elmo is a city in Fayette County, Illinois, United States. The population was 1,254 at the 2020 census. St. Elmo was established in 1871.

Geography
St. Elmo is located at 39.02667°N, -88.85194°W (39.026709, -88.852062).

According to the 2021 census gazetteer files, St. Elmo has a total area of 1.51 sqmi, of which 1.48 sqmi (or 98.41%) is land and 0.02 sqmi (or 1.59%) is water.

Demographics
As of the 2020 census there were 1,254 people, 534 households, and 372 families residing in the city. The population density was 832.12 PD/sqmi. There were 565 housing units at an average density of 374.92 /sqmi. The racial makeup of the city was 96.73% White, 0.24% African American, 0.00% Native American, 0.16% Asian, 0.00% Pacific Islander, 0.56% from other races, and 2.31% from two or more races. Hispanic or Latino of any race were 1.28% of the population.

There were 534 households, out of which 26.0% had children under the age of 18 living with them, 48.13% were married couples living together, 14.79% had a female householder with no husband present, and 30.34% were non-families. 24.72% of all households were made up of individuals, and 15.17% had someone living alone who was 65 years of age or older. The average household size was 3.28 and the average family size was 2.67.

The city's age distribution consisted of 24.1% under the age of 18, 9.3% from 18 to 24, 20.7% from 25 to 44, 28.8% from 45 to 64, and 17.3% who were 65 years of age or older. The median age was 40.3 years. For every 100 females, there were 90.9 males. For every 100 females age 18 and over, there were 103.5 males.

The median income for a household in the city was $43,913, and the median income for a family was $50,662. Males had a median income of $31,528 versus $22,750 for females. The per capita income for the city was $19,890. About 14.0% of families and 22.1% of the population were below the poverty line, including 51.0% of those under age 18 and 4.5% of those age 65 or over.

Education
St. Elmo is home to St. Elmo Community School District #202, which consists of the St. Elmo Elementary School, located at 519 West 2nd Street and the St. Elmo Jr/Sr High School located at the far northern edge of town at 300 West 12th Street.