Big Rock is located in Illinois. Big Rock, Illinois has a population of 1,211. Big Rock is less family-centric than the surrounding county with 24.38% of the households containing married families with children. The county average for households married with children is 39.24%.
The median household income in Big Rock, Illinois is $84,464. The median household income for the surrounding county is $74,862 compared to the national median of $57,652. The median age of people living in Big Rock is 47.2 years.
The average high temperature in July is 83.9 degrees, with an average low temperature in January of 14.1 degrees. The average rainfall is approximately 37.7 inches per year, with 28.3 inches of snow per year.
