| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Chieni, Ruguru | 10100 |
| Postal/ZIP Codes in Gatunganga, Ruguru | 10100 |
| Postal/ZIP Codes in Hiriga, Ruguru | 10100 |
| Postal/ZIP Codes in Iruri, Ruguru | 10100 |
| Postal/ZIP Codes in Karuthi, Ruguru | 10100 |
| Postal/ZIP Codes in Kiamariga, Ruguru | 10122 |
| Postal/ZIP Codes in Ruturu, Ruguru | 10100 |
| Postal/ZIP Codes in Sagana, Ruguru | 10100 |