Sleepy Hollow is located in Illinois. Sleepy Hollow, Illinois has a population of 3,325. Sleepy Hollow is less family-centric than the surrounding county with 33.37% of the households containing married families with children. The county average for households married with children is 39.24%.
The median household income in Sleepy Hollow, Illinois is $102,188. 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 Sleepy Hollow is 45.5 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.