Port st. joe is located in Gulf county Florida with a geographic area of 9.4 square miles. The total population in Port st. joe is 3,502 with 51.3% male and 48.7% female. Children under age 5 represent 6.9% of the population, under age 18 equal 21.9% of the population and over age 65 is 20.5% of the population. The median household income is $60,682, per capita income is $31,475. There are a total of 1,494 housing units with 72.4% owner occupied. Education includes 22.8% of residents that are high school graduates and 29.3% with a bachelor's degree or higher. The average temperature in Port st. joe in the summer is 80 degrees, and in the winter 56 degrees.