| Post Office | Port Lavaca |
| Division | Calhoun |
| Pincode | 77979 |
| Post Office | Seadrift |
| Division | Calhoun |
| Pincode | 77983 |
| Post Office | Port O Connor |
| Division | Calhoun |
| Pincode | 77982 |
| Post Office | Point Comfort |
| Division | Calhoun |
| Pincode | 77978 |
4 City in Calhoun | List of Zip Codes Location In Texas and Your selected County Calhoun
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