Seohaean Expressway, Heungdeok-myeon, Gochang-gun postal codes (1)
The one building on Seohaean Expressway in Heungdeok-myeon, Gochang-gun uses postal code 56415. Data as of August 2026.
| Address | Postal code | Building |
|---|---|---|
| Seohaean Expressway 84 | 56415 | 한국도로공사선운산영업소 |