| Postal/ZIP Codes in Bongam-Dong, Masanhoewon (봉암동) |
51339, 51340, 51341, 51342, 51343, … |
| Postal/ZIP Codes in Ducheok-Dong, Masanhoewon (두척동) |
51298, 51309, 51310 |
| Postal/ZIP Codes in Guam-Dong, Masanhoewon (구암동) |
51203, 51204, 51205, 51206, 51207, … |
| Postal/ZIP Codes in Hapseong-Dong, Masanhoewon (합성동) |
51208, 51209, 51210, 51300, 51301, … |
| Postal/ZIP Codes in Hoeseong-Dong, Masanhoewon (회성동) |
51298, 51299, 51305, 51306, 51307, … |
| Postal/ZIP Codes in Hoewon-Dong, Masanhoewon (회원동) |
51286, 51287, 51288, 51289, 51290, … |
| Postal/ZIP Codes in Naeseo-eup, Masanhoewon (내서읍) |
51211, 51212, 51213, 51214, 51215, … |
| Postal/ZIP Codes in Seokjeon-Dong, Masanhoewon (석전동) |
51287, 51302, 51303, 51304, 51305, … |
| Postal/ZIP Codes in Yangdeok-Dong, Masanhoewon (양덕동) |
51317, 51318, 51319, 51320, 51321, … |