St John is located in Indiana. St John, Indiana has a population of 18,966. St John is more family-centric than the surrounding county with 35% households with children. The county percentage for households with children is 29%.
The median household income in St John, Indiana is $103,450. The median household income for the surrounding county is $58,736 compared to the national median of $66,222. The median age of people living in St John is 42.4 years.
The average high temperature in July is 83.7 degrees, with an average low temperature in January of 14.8 degrees. The annual precipitation is 38.65.
