Gunyu-ro, Singwang-myeon, Hampyeong-gun postal codes (93)
On Gunyu-ro in Singwang-myeon, Hampyeong-gun the postal code depends on the building number: numbers 1–45 use 57107, numbers 99–308 use 57108, numbers 395–632-66 use 57103. Data as of August 2026.