Wilmington is located in Illinois. Wilmington, Illinois has a population of 6,070. Wilmington is less family-centric than the surrounding county with 25% households with children. The county percentage for households with children is 36%.
The median household income in Wilmington, Illinois is $58,982. The median household income for the surrounding county is $88,241 compared to the national median of $66,222. The median age of people living in Wilmington is 41.5 years.
The average high temperature in July is 84.6 degrees, with an average low temperature in January of 13.5 degrees. The annual precipitation is 37.25.
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