| Place | Post Code |
|---|---|
| Blittuo, Lower Gbei | None |
| Freetown, Lower Gbei | None |
| Gailah, Lower Gbei | None |
| Gayelay, Lower Gbei | None |
| Gayeplay, Lower Gbei | None |
| Gbei Vonwea, Lower Gbei | None |
| Gbonwea (Old Town), Lower Gbei | None |
| Gongbayplay, Lower Gbei | None |
| Gwehlay, Lower Gbei | None |
| Karnueplay, Lower Gbei | None |
| Tekeiplay, Lower Gbei | None |
| Wimpeaplay, Lower Gbei | None |
| All postal codes in Twan River | |
|---|---|
| Gborplay, Twan River | |
| Loegbao, Twan River | |
| Lower Gbei, Twan River | |
| Sorllay, Twan River | |
| Srohlay, Twan River | |
| Upper Gbei, Twan River | |
| Wealay, Twan River | |