About Port Isabel, TXPort Isabel is located in Texas. Port Isabel, Texas has a population of 5,184. Port Isabel is less family-centric than the surrounding county with 23% households with children. The county percentage for households with children is 41%. The median household income in Port Isabel, Texas is $35,375. The median household income for the surrounding county is $35,937 compared to the national median of $57,525. The median age of people living in Port Isabel is 35.1 years. Port Isabel WeatherThe average high temperature in July is 89.2 degrees, with an average low temperature in January of 52 degrees. The annual precipitation is 28.56. Port Isabel MapPort Isabel real estate officesReal estate near Port IsabelNearby CitiesNearby Cities Homes for Sale |