| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Großhart, Hartl | 8271, 8272, 8273 |
| Postal/ZIP Codes in Hartl, Hartl | 8224, 8265, 8272 |
| Postal/ZIP Codes in Neusiedl, Hartl | 8272, 8265 |
| Postal/ZIP Codes in Obertiefenbach, Hartl | 8224 |
| Postal/ZIP Codes in Untertiefenbach, Hartl | 8222, 8224, 8224 |