Harmony is located in Illinois. Harmony, Illinois has a population of 1,277.
The median household income in Harmony, Illinois is $68,654. The median household income for the surrounding county is $58,188 compared to the national median of $69,021. The median age of people living in Harmony is 44.5 years.
The average high temperature in July is 87 degrees, with an average low temperature in January of 15.9 degrees. The average rainfall is approximately 40 inches per year, with 20.4 inches of snow per year.