Big Rock is located in Illinois. Big Rock, Illinois has a population of 1,208. Big Rock is more family-centric than the surrounding county with 39.37% of the households containing married families with children. The county average for households married with children is 36.28%.
The median household income in Big Rock, Illinois is $112,778. The median household income for the surrounding county is $88,935 compared to the national median of $69,021. The median age of people living in Big Rock is 45.9 years.
The average high temperature in July is 84.1 degrees, with an average low temperature in January of 14.5 degrees. The average rainfall is approximately 37.8 inches per year, with 28.9 inches of snow per year.
