South Beloit is located in Illinois. South Beloit, Illinois has a population of 7,999. South Beloit is more family-centric than the surrounding county with 42.08% of the households containing married families with children. The county average for households married with children is 27.29%.
The median household income in South Beloit, Illinois is $63,174. The median household income for the surrounding county is $51,110 compared to the national median of $57,652. The median age of people living in South Beloit is 33.2 years.
The average high temperature in July is 82.9 degrees, with an average low temperature in January of 12.6 degrees. The average rainfall is approximately 36.4 inches per year, with 31.9 inches of snow per year.