St Elmo is located in Illinois. St Elmo, Illinois has a population of 1,561. St Elmo is more family-centric than the surrounding county with 31.16% of the households containing married families with children. The county average for households married with children is 27.96%.
The median household income in St Elmo, Illinois is $47,303. The median household income for the surrounding county is $47,744 compared to the national median of $69,021. The median age of people living in St Elmo is 37.1 years.
The average high temperature in July is 87.4 degrees, with an average low temperature in January of 20.8 degrees. The average rainfall is approximately 41.6 inches per year, with 14.4 inches of snow per year.
