Round Lake Beach is located in Illinois. Round Lake Beach, Illinois has a population of 27,412. Round Lake Beach is more family-centric than the surrounding county with 37.46% of the households containing married families with children. The county average for households married with children is 36.27%.
The median household income in Round Lake Beach, Illinois is $79,837. The median household income for the surrounding county is $97,127 compared to the national median of $69,021. The median age of people living in Round Lake Beach is 33.2 years.
The average high temperature in July is 82.2 degrees, with an average low temperature in January of 13.9 degrees. The average rainfall is approximately 36.7 inches per year, with 43.2 inches of snow per year.