Dewey is located in Illinois. Dewey, Illinois has a population of 63. Dewey is less family-centric than the surrounding county with 0% of the households containing married families with children. The county average for households married with children is 30.63%.
The median household income for the surrounding county is $56,939 compared to the national median of $69,021. The median age of people living in Dewey is 37.4 years.
The average high temperature in July is 84.8 degrees, with an average low temperature in January of 16.6 degrees. The average rainfall is approximately 40.3 inches per year, with 20.1 inches of snow per year.