| Postal Code information | |
|---|---|
| Place | Hongseong-eup (홍성읍) |
| Post Code | 32216, 32217, 32218, 32219, 32220, 32221, 32222, 32223, 32224, 32225, 32226, 32227, 32228, 32229, 32230, 32231, 32232, 32233, 32234, 32235, 32236, 32237, 32238, 32239, 32240, 32241, 32242, 32243, 32244, 32245, 32246, 32247, 32248, 32249, 32250, 32282, 32283 |
| County | Hongseong |
| State | South Chungcheong |
| Time zone | Asia/Seoul |