Onarga is located in Illinois. Onarga, Illinois has a population of 1,146. Onarga is more family-centric than the surrounding county with 40.06% of the households containing married families with children. The county average for households married with children is 28.5%.
The median household income in Onarga, Illinois is $44,500. The median household income for the surrounding county is $48,857 compared to the national median of $57,652. The median age of people living in Onarga is 38.5 years.
The average high temperature in July is 84.9 degrees, with an average low temperature in January of 15.9 degrees. The average rainfall is approximately 38.7 inches per year, with 20.5 inches of snow per year.
