| Locality | Post Code |
|---|---|
| Kampong Batu Apoi, Batu Apoi | PC1151 |
| Kampong Gadong Baru, Batu Apoi | PC1951 |
| Kampong Lakiun, Batu Apoi | PC2751 |
| Kampong Lamaling, Batu Apoi | PC3151 |
| Kampong Luagan, Batu Apoi | PC2151 |
| Kampong Negalang Iring, Batu Apoi | PC2351 |
| Kampong Negalang Unat, Batu Apoi | PC2551 |
| Kampong Peliunan, Batu Apoi | PC1551 |
| Kampong Sekurop, Batu Apoi | PC3551 |
| Kampong Selapon, Batu Apoi | PC3351 |
| Kampong Sungai Bantaian, Batu Apoi | PC1751 |
| Kampong Sungai Radang, Batu Apoi | PC1351 |
| Kampong Tanjong Bungar, Batu Apoi | PC2951 |