| Place | Postal Code |
|---|---|
| Lintongnihuta, Ronggur Nihuta | 22392 |
| Paraduan, Ronggur Nihuta | 22392 |
| Ronggur Nihuta, Ronggur Nihuta | 22392 |
| Sabungan Nihuta, Ronggur Nihuta | 22392 |
| Salaon Dolok, Ronggur Nihuta | 22392 |
| Salaon Toba, Ronggur Nihuta | 22392 |
| Salaon Tonga Tonga, Ronggur Nihuta | 22392 |
| Sijambur, Ronggur Nihuta | 22392 |