St Johns is located in Michigan. St Johns, Michigan has a population of 7,894. St Johns is less family-centric than the surrounding county with 31.63% of the households containing married families with children. The county average for households married with children is 32.81%.
The median household income in St Johns, Michigan is $49,301. The median household income for the surrounding county is $64,903 compared to the national median of $57,652. The median age of people living in St Johns is 38.5 years.
The average high temperature in July is 82.6 degrees, with an average low temperature in January of 15.4 degrees. The average rainfall is approximately 33.3 inches per year, with 39.5 inches of snow per year.