| Place | Post Code |
|---|---|
| Cinta Damai, Medan Helvetia | 20126 |
| Dwi Kora, Medan Helvetia | 20123 |
| Helvetia, Medan Helvetia | 20124 |
| Helvetia Tengah, Medan Helvetia | 20124 |
| Helvetia Timur, Medan Helvetia | 20124 |
| Sei Sikambing C II, Medan Helvetia | 20123 |
| Tanjung Gusta, Medan Helvetia | 20125 |