South Korea Postal Code 31121 Boundary Map
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Profile
| Postal Code | 31121 |
| Postal Code Name | Cheonan-si |
| Province | Chungcheongnam-do |
| County | Cheonan-si |
| Timezone | Korean Standard Time (KST) |
| Adjacent Postal Codes | 31117 31118 31120 31122 31123 31136 31143 31144 |