Lyndon is located in Illinois. Lyndon, Illinois has a population of 575. Lyndon is less family-centric than the surrounding county with 23% households with children. The county percentage for households with children is 26%.
The median household income in Lyndon, Illinois is $61,667. The median household income for the surrounding county is $55,469 compared to the national median of $66,222. The median age of people living in Lyndon is 46.2 years.
The average high temperature in July is 85.1 degrees, with an average low temperature in January of 11.52 degrees. The annual precipitation is 36.78.