Wonder Lake is located in Illinois. Wonder Lake, Illinois has a population of 4,032. Wonder Lake is more family-centric than the surrounding county with 48.25% of the households containing married families with children. The county average for households married with children is 33.95%.
The median household income in Wonder Lake, Illinois is $95,152. The median household income for the surrounding county is $93,801 compared to the national median of $69,021. The median age of people living in Wonder Lake is 34 years.
The average high temperature in July is 83.3 degrees, with an average low temperature in January of 12.6 degrees. The average rainfall is approximately 35.8 inches per year, with 33.7 inches of snow per year.
