Port St. John is a city located in Florida. Port St. John has a 2020 population of 11,684. Port St. John is currently declining at a rate of 0.00% annually and its population has decreased by -4.75% since the most recent census, which recorded a population of 12,267 in 2010. Port St. John reached it's highest population of 12,912 in 2011.
The average household income in Port St. John is $74,046 with a poverty rate of 8.22%. The median rental costs in recent years comes to $1,126 per month, and the median house value is $149,900. The median age in Port St. John is 42.5 years, 40.7 years for males, and 44.5 years for females.