| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Angaco Sud, San Martín | J5417 XAG |
| Postal/ZIP Codes in Belgrano, San Martín | J5439 XAE |
| Postal/ZIP Codes in Calibar, San Martín | J5442 XAV |
| Postal/ZIP Codes in Calle Larga, San Martín | J5439 XAF |
| Postal/ZIP Codes in Callecita, San Martín | J5439 XAG |
| Postal/ZIP Codes in Dos Acequias, San Martín | J5439 |
| Postal/ZIP Codes in Kilometro 905, San Martín | J5439 XAH |
| Postal/ZIP Codes in La Germania, San Martín | J5439 XAI |
| Postal/ZIP Codes in La Puntilla, San Martín | J5439 XAJ |
| Postal/ZIP Codes in Los Angacos, San Martín | J5439 XAK |
| Postal/ZIP Codes in Puntilla Blanca, San Martín | J5439 XAA |
| Postal/ZIP Codes in Puntilla Negra, San Martín | J5439 XAB |
| Postal/ZIP Codes in San Isidro, San Martín | J5416 |
| Postal/ZIP Codes in San Martin, San Martín | J5418 |
| Postal/ZIP Codes in Villa Alem, San Martín | J5420 |
| Postal/ZIP Codes in Villa Dominguito, San Martín | J5439 XAD |
| Postal/ZIP Codes in Villa Lugano, San Martín | J5439 XAC |