| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Tongin-Dong, Jongro (통인동) | 03036, 03040 |
| Postal/ZIP Codes in Tongui-Dong, Jongro (통의동) | 03044 |
| Postal/ZIP Codes in Unni-Dong, Jongro (운니동) | 03058, 03131 |
| Postal/ZIP Codes in Waryong-Dong, Jongro (와룡동) | 03057, 03072, 03073, 03131, 03132, … |
| Postal/ZIP Codes in Wonnam-Dong, Jongro (원남동) | 03080, 03081, 03127, 03136 |
| Postal/ZIP Codes in Wonseo-Dong, Jongro (원서동) | 03050, 03051, 03057, 03058 |
| Postal/ZIP Codes in Yeji-Dong, Jongro (예지동) | 03194, 03195 |
| Postal/ZIP Codes in Yeongeon-Dong, Jongro (연건동) | 03080, 03081, 03082, 03086, 03100, … |
| Postal/ZIP Codes in Yeonji-Dong, Jongro (연지동) | 03127, 03128, 03129 |