About postal code 28721
The postal code 28721 routes mail to 청주시 상당구 in the 충청북도 region of South Korea. Use it as the postal segment of any address in this area, and confirm unusual addresses with the local postal operator.
South Korea · Postal code
28721 - 청주시 상당구
Postal code 28721 is 청주시 상당구 in 충청북도, South Korea.
| Postal code | 28721 |
| Place | 청주시 상당구 |
| Region | 충청북도 |
| District | 청주시 상당구 |
| Country | South Korea (KR) |
| Coordinates | 36.6288, 127.4991 (map) |