Dewey is located in Illinois. Dewey, Illinois has a population of 32. Dewey is less family-centric than the surrounding county with 14% households with children. The county percentage for households with children is 23%.
The median household income in Dewey, Illinois is $70,000. The median household income for the surrounding county is $56,059 compared to the national median of $66,222. The median age of people living in Dewey is 48.2 years.
The average high temperature in July is 86.11 degrees, with an average low temperature in January of 13.75 degrees. The annual precipitation is 37.55.