Port St. John is a census-designated place located between Titusville and Cocoa in Brevard County, Florida.

[6] According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.8 km2), all of it land.

[8] Included in PSJ4T's incorporation plans were five separate communities: Delespine, Williams Point, Hardeeville, Frontenac and a part of Sharpes.

[14] The study was funded by Brevard County[15] and performed by the University of Central Florida.

[22] State statute prevented Port St. John from considering incorporation for ten years.

In 2012, the area received national attention when a mother shot and killed her four teenagers and herself.

As of January 13, the fire has burned over 1,000 acres of land, as well as closing both lanes of State Route 407.

[citation needed] According to the 2010 United States Census info, Port Saint John has a total population of 12,267.

45% of the students qualify for free or reduced lunch, a typical indication of poverty.