St. John is a city located in Indiana. St. John has a 2020 population of 69,760. St. John is currently growing at a rate of 0.97% annually and its population has increased by 4.53% since the most recent census, which recorded a population of 66,740 in 2010. St. John reached it's highest population of 69,760 in 2021.
The average household income in St. John is $107,701 with a poverty rate of 4.23%. The median rental costs in recent years comes to $988 per month, and the median house value is $236,100. The median age in St. John is 44.3 years, 43.5 years for males, and 44.9 years for females.