| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Ciupelniţa, Dumbrava | 107221 |
| Postal/ZIP Codes in Cornu de Sus, Dumbrava | 107222 |
| Postal/ZIP Codes in Dumbrava, Dumbrava | 107220 |
| Postal/ZIP Codes in Trestienii de Jos, Dumbrava | 107223 |
| Postal/ZIP Codes in Trestienii de Sus, Dumbrava | 107224 |
| Postal/ZIP Codes in Zănoaga, Dumbrava | 107226 |