Port mansfield is located in Willacy county Texas with a geographic area of 4.9 square miles. The total population in Port mansfield is 127 with 39.4% male and 60.6% female. Children under age 5 represent 0.0% of the population, under age 18 equal 0.0% of the population and over age 65 is 61.4% of the population. The median household income is $17,222, per capita income is $23,846. There are a total of 92 housing units with 93.5% owner occupied. Education includes 43.5% of residents that are high school graduates and 38.0% with a bachelor's degree or higher. The average temperature in Port mansfield in the summer is 83 degrees, and in the winter 49 degrees.