Grafton is located in Illinois. Grafton, Illinois has a population of 636. Grafton is less 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 30.2%.
The median household income in Grafton, Illinois is $81,250. The median household income for the surrounding county is $71,655 compared to the national median of $69,021. The median age of people living in Grafton is 59.1 years.
The average high temperature in July is 87.7 degrees, with an average low temperature in January of 20.5 degrees. The average rainfall is approximately 40.7 inches per year, with 13.7 inches of snow per year.
