Gapyeong-ro, Sillim-myeon, Gochang-gun postal codes (61)
On Gapyeong-ro in Sillim-myeon, Gochang-gun the postal code depends on the building number: numbers 5–581 use 56423, numbers 617-3–654-8 use 56422. Data as of August 2026.
On Gapyeong-ro in Sillim-myeon, Gochang-gun the postal code depends on the building number: numbers 5–581 use 56423, numbers 617-3–654-8 use 56422. Data as of August 2026.