Area Codes sa Heerjansdam
| Area Code▲ | Lungsod↕ | Namamahalang Rehiyon↕ | Populasyon ng Siyudad↕ | Bansa/Rehiyon | Oras ng Dako |
|---|---|---|---|---|---|
| 78 | Dordrecht | Provincie Zuid-Holland | 119,260 | Netherlands | Europe/Amsterdam |
Mga Kalapit na Siyudad
| Lungsod | Rehiyon | Bansa | Populasyon | Area Codes | Postal Code |
|---|---|---|---|---|---|
| Barendrecht | Provincie Zuid-Holland | Netherlands | 38,672 | 180 | 2991, 2992, 2993, 2994 |
| Maasdam | Provincie Zuid-Holland | Netherlands | — | 78 | 3299, 3297 |
| Puttershoek | Provincie Zuid-Holland | Netherlands | — | 78 | 3297 |
| Ridderkerk | Provincie Zuid-Holland | Netherlands | 45,189 | 180 | 2981, 2982, 2983, 2984 |
| Rijsoord | Provincie Zuid-Holland | Netherlands | — | 180 | 2989, 2988 |