4 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 77979 | Port Lavaca | 16,488 |
| 77983 | Seadrift | 2,529 |
| 77982 | Port O'Connor | 620 |
| 77978 | Point Comfort | 304 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 4 ZCTAs in Calhoun County, Texas (US Census).