Annawan is located in Illinois. Annawan, Illinois has a population of 878. Annawan is more family-centric than the surrounding county with 41.23% of the households containing married families with children. The county average for households married with children is 28.83%.
The median household income in Annawan, Illinois is $52,000. The median household income for the surrounding county is $62,097 compared to the national median of $69,021. The median age of people living in Annawan is 41.8 years.
The average high temperature in July is 84.2 degrees, with an average low temperature in January of 13.5 degrees. The average rainfall is approximately 37.8 inches per year, with 27.6 inches of snow per year.