Clay City is located in Illinois. Clay City, Illinois has a population of 819. Clay City is more family-centric than the surrounding county with 38.98% of the households containing married families with children. The county average for households married with children is 23.34%.
The median household income in Clay City, Illinois is $48,304. The median household income for the surrounding county is $53,900 compared to the national median of $69,021. The median age of people living in Clay City is 31.9 years.
The average high temperature in July is 87.9 degrees, with an average low temperature in January of 21.3 degrees. The average rainfall is approximately 44.7 inches per year, with 10.6 inches of snow per year.
