Port Isabel is a city located in Cameron County Texas. With a 2020 population of 6,214, it is the 320th largest city in Texas and the 4233rd largest city in the United States . Port Isabel is currently declining at a rate of -0.34% annually but its population has increased by 24.13% since the most recent census, which recorded a population of 5,006 in 2010. Port Isabel reached it's highest population of 6,402 in 2011. Spanning over 14 miles, Port Isabel has a population density of 916 people per square mile.
The average household income in Port Isabel is $48,206 with a poverty rate of 27.15%. The median rental costs in recent years comes to $724 per month, and the median house value is $108,500. The median age in Port Isabel is 41.7 years, 42.3 years for males, and 40.9 years for females.