Vandalia is located in Missouri. Vandalia, Missouri has a population of 4,201. Vandalia is less family-centric than the surrounding county with 21.82% of the households containing married families with children. The county average for households married with children is 29.07%.
The median household income in Vandalia, Missouri is $35,938. The median household income for the surrounding county is $44,056 compared to the national median of $57,652. The median age of people living in Vandalia is 36.8 years.
The average high temperature in July is 86.5 degrees, with an average low temperature in January of 18.4 degrees. The average rainfall is approximately 40.4 inches per year, with 15.9 inches of snow per year.