Calhoun County, TX ZIP Codes & Directory
Complete postal guide for Calhoun County, Texas. Featuring the official county seat of Port Lavaca, largest municipality Port Lavaca, and serving 3 incorporated municipal entities.
Municipalities Located in Calhoun County
Incorporated Cities, Towns, and Villages
Active USPS Postal Codes in Calhoun County
Standard delivery zones and geographic service boundaries
Frequently Asked Questions About Calhoun County, TX
What is the county seat and largest city in Calhoun County? ▾
The official county seat of Calhoun County is Port Lavaca, and its largest incorporated municipality by population is Port Lavaca.
How many cities, towns, and villages are in Calhoun County? ▾
Calhoun County encompasses 3 incorporated municipal entities, including 3 cities, 0 towns, and 0 villages.
What is the total population and land area of Calhoun County? ▾
According to official U.S. Census Bureau data, Calhoun County has a population of approximately 20,106 residents and spans an area of 512 square miles.
How many postal codes operate in Calhoun County? ▾
There are 1 active USPS postal codes serving addresses within Calhoun County, Texas.