Port Lavaca, TX is a city located in Calhoun County, Texas and has a land area of 340.46 square miles (881.79 km2). The water area for the city is 147.80 square miles or 382.80 km2. There is one unique zip code in Port Lavaca, Texas and it is 77979. The area code(s) for Port Lavaca is 361.
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