Grayburg zip code
Zip code in Grayburg, TX
The location Grayburg belongs to Hardin County, state of Texas. Grayburg has been assigned with the zip code 77659.
The location name Grayburg is listed as unacceptable by the US Postal Service so any mailing should avoid it. Instead you can use Sour Lake, the official name of the location.
| Zip code | Type | Population |
|---|---|---|
| 77659 | STANDARD | 4,500 |
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