| Locality | Post Code |
|---|---|
| Beibu, Sanwan (北埔村) | 352021, 352022 |
| Dahe, Sanwan (大河村) | 352022 |
| Daping, Sanwan (大坪村) | 352022 |
| Dingliao, Sanwan (頂寮村) | 352000 |
| Neiwan, Sanwan (內灣村) | 352020 |
| Sanwan, Sanwan (三灣村) | 352020 |
| Tongjing, Sanwan (銅鏡村) | 352020, 352021 |
| Yonghe, Sanwan (永和村) | 352022 |