St Johns is located in Michigan. St Johns, Michigan has a population of 7,845. St Johns is less family-centric than the surrounding county with 29% households with children. The county percentage for households with children is 29%.
The median household income in St Johns, Michigan is $59,778. The median household income for the surrounding county is $71,959 compared to the national median of $66,222. The median age of people living in St Johns is 38.6 years.
The average high temperature in July is 82.5 degrees, with an average low temperature in January of 13.9 degrees. The annual precipitation is 32.98.