| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Băile 1 Mai, Sânmartin | 417496 |
| Postal/ZIP Codes in Băile Felix, Sânmartin | 417500 |
| Postal/ZIP Codes in Betfia, Sânmartin | 417497 |
| Postal/ZIP Codes in Cihei, Sânmartin | 417498 |
| Postal/ZIP Codes in Cordău, Sânmartin | 417499 |
| Postal/ZIP Codes in Haieu, Sânmartin | 417501 |
| Postal/ZIP Codes in Rontău, Sânmartin | 417502 |
| Postal/ZIP Codes in Sânmartin, Sânmartin | 417495 |