| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Gaichanjiru, Gaichanjiru | 10200 |
| Postal/ZIP Codes in Kagumoini, Gaichanjiru | 10200 |
| Postal/ZIP Codes in Kariua, Gaichanjiru | 10231 |
| Postal/ZIP Codes in Mariaini, Gaichanjiru | 10200 |
| Postal/ZIP Codes in Ngurweini, Gaichanjiru | 10200 |