Port Lavaca is a city located in Calhoun County Texas. It is also the county seat of Calhoun County. With a 2020 population of 11,520, it is the 219th largest city in Texas and the 2808th largest city in the United States . Port Lavaca is currently declining at a rate of -1.43% annually and its population has decreased by -5.94% since the most recent census, which recorded a population of 12,248 in 2010. Port Lavaca reached it's highest population of 12,370 in 2014. Spanning over 14 miles, Port Lavaca has a population density of 1,135 people per square mile.
The average household income in Port Lavaca is $71,768 with a poverty rate of 13.88%. The median rental costs in recent years comes to $679 per month, and the median house value is $106,600. The median age in Port Lavaca is 36.8 years, 36.8 years for males, and 36.8 years for females.