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  4. Postal Code 18111

South Korea Postal Code 18111 Boundary Map

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Postal Code18111
Postal Code NameOsan-si
ProvinceGyeonggi-do
CountyOsan-si
TimezoneKorean Standard Time (KST)
Adjacent Postal Codes18105
18106
18112
18412
18418
18428
18436
18438
18439

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