ZIP CodesZIP codes in Calhoun County, Texas
Calhoun County, Texas has 4 ZIP codes in this list, from 77978 to 77983. They cover 4 places, among them Point Comfort, Port Lavaca, Port O Connor and Seadrift.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 77978 | Point Comfort | 1.7 | 28.665, -96.551 |
| 77979 | Port Lavaca | 340 | 28.601, -96.626 |
| 77982 | Port O Connor | 42.8 | 28.448, -96.406 |
| 77983 | Seadrift | 86.0 | 28.410, -96.702 |
The ZIP code areas of Calhoun County add up to about 471 square miles of land (1,220 sq km) as the Census Bureau draws them. The largest is 77979 (Port Lavaca), with 340 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Point Comfort, TX 77978.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.