Flag Center is located in Illinois. Flag Center, Illinois has a population of 4,690.
The median household income in Flag Center, Illinois is $50,500. The median household income for the surrounding county is $67,534 compared to the national median of $69,021. The median age of people living in Flag Center is 40 years.
The average high temperature in July is 82.6 degrees, with an average low temperature in January of 12 degrees. The average rainfall is approximately 35.7 inches per year, with 27.6 inches of snow per year.
