Mark is located in Illinois. Mark, Illinois has a population of 588. Mark is more family-centric than the surrounding county with 25% of the households containing married families with children. The county average for households married with children is 24.73%.
The median household income in Mark, Illinois is $51,250. The median household income for the surrounding county is $64,741 compared to the national median of $57,652. The median age of people living in Mark is 49.6 years.
The average high temperature in July is 86.4 degrees, with an average low temperature in January of 13.7 degrees. The average rainfall is approximately 37.9 inches per year, with 15.5 inches of snow per year.
