Smithboro is located in Illinois. Smithboro, Illinois has a population of 200. Smithboro is more family-centric than the surrounding county with 42.59% of the households containing married families with children. The county average for households married with children is 29.24%.
The median household income in Smithboro, Illinois is $56,964. The median household income for the surrounding county is $54,393 compared to the national median of $57,652. The median age of people living in Smithboro is 33.1 years.
The average high temperature in July is 87.3 degrees, with an average low temperature in January of 20.6 degrees. The average rainfall is approximately 42.1 inches per year, with 12.8 inches of snow per year.