Summit is located in Illinois.
Summit, Illinois has population of 11,389.
Summit is more family-centric than the surrounding county with 35.75% of the households containing married families with children.
The median household income in Summit, Illinois is $47,975.
The median household income for the surrounding county is $54,828 compared to the national median of $53,482.
The median age of people living in Summit is 29.9 years.
The average high temperature in July is 84.1 degrees, with an average low temperature in January of 17.6 degrees.
The average rainfall is approximately 38.2 inches per year, with 34.8 inches of snow per year.