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  4. Postal Code 18137

South Korea Postal Code 18137 Boundary Map

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Postal Code18137
Postal Code NameOsan-si
ProvinceGyeonggi-do
CountyOsan-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes18129
18130
18136
18138
18141
18142
18143
18146
18147

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