Port Saint John is located in Florida. Port Saint John, Florida has a population of 9,445.
The median household income in Port Saint John, Florida is $48,085. The median household income for the surrounding county is $63,632 compared to the national median of $69,021. The median age of people living in Port Saint John is 43.4 years.
The average high temperature in July is 90.4 degrees, with an average low temperature in January of 49.4 degrees. The average rainfall is approximately 53.4 inches per year, with 0 inches of snow per year.