Wonsan-daero, Ocheon-myeon, Boryeong-si postal codes (4)
All 4 buildings on Wonsan-daero in Ocheon-myeon, Boryeong-si use postal code 33411. Data as of August 2026.
| Address | Postal code | Building |
|---|---|---|
| Wonsan-daero 727 | 33411 | 원산도해저터널관리사무소 |
| Wonsan-daero 729 | 33411 | |
| Wonsan-daero 759 | 33411 | |
| Wonsan-daero 842 | 33411 |