Vandalia is located in Illinois. Vandalia, Illinois 62471has a population of 6,827. Vandalia 62471 is less family-centric than the surrounding county with 25% households with children. The county percentage for households with children is 25%.
The median household income in Vandalia, Illinois 62471 is $40,155. The median household income for the surrounding county is $49,580 compared to the national median of $66,222. The median age of people living in Vandalia 62471 is 37.3 years.
The average high temperature in July is 87.5 degrees, with an average low temperature in January of 18 degrees. The annual precipitation is 38.9.