Saint Johns is located in Michigan. Saint Johns, Michigan has a population of 18,688. Saint Johns is more family-centric than the surrounding county with 30% households with children. The county percentage for households with children is 29%.
The median household income in Saint Johns, Michigan is $65,839. 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 Saint Johns is 40.8 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.