Winfield is located in Illinois. Winfield, Illinois has a population of 9,090. Winfield is less family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 31%.
The median household income in Winfield, Illinois is $107,876. The median household income for the surrounding county is $89,084 compared to the national median of $61,963. The median age of people living in Winfield is 45.9 years.
The average high temperature in July is 86.8 degrees, with an average low temperature in January of 14.2 degrees. The annual precipitation is 37.94.