| Postal/ZIP Codes in Cheonghak-Dong, Yeonsu (청학동) |
21901, 21902, 21903, 21904, 21905, … |
| Postal/ZIP Codes in Dongchun-Dong, Yeonsu (동춘동) |
21943, 21944, 21945, 21960, 21961, … |
| Postal/ZIP Codes in Ongnyeon-Dong, Yeonsu (옥련동) |
21900, 21939, 21940, 21941, 21942, … |
| Postal/ZIP Codes in Seonhak-Dong, Yeonsu (선학동) |
21907, 21908, 21909, 21910, 21911, … |
| Postal/ZIP Codes in Songdo-Dong, Yeonsu (송도동) |
21982, 21983, 21984, 21985, 21986, … |
| Postal/ZIP Codes in Yeonsu-Dong, Yeonsu (연수동) |
21911, 21912, 21913, 21914, 21918, … |