Port isabel is located in Cameron county Texas with a geographic area of 6.8 square miles. The total population in Port isabel is 6,278 with 49.3% male and 50.7% female. Children under age 5 represent 7.4% of the population, under age 18 equal 25.3% of the population and over age 65 is 18.7% of the population. The median household income is $33,895, per capita income is $18,153. There are a total of 2,073 housing units with 57.1% owner occupied. Education includes 39.4% of residents that are high school graduates and 13.8% with a bachelor's degree or higher. The average temperature in Port isabel in the summer is 83 degrees, and in the winter 49 degrees.