| Locality | Post Code |
|---|---|
| Maria, General San Martín | X5925 XAE |
| Monte de Los Lazos, General San Martín | X5900 XAF |
| Pasco, General San Martín | X5925 |
| Paunero, General San Martín | X5738 XAA |
| Ramon J Carcano, General San Martín | X5900 XAG |
| San Antonio de Yucat, General San Martín | X5936 XAC |
| Sanabria, General San Martín | X5901 XAC |
| Santa Victoria, General San Martín | X2675 XAA |
| Sarmica, General San Martín | X5925 XAF |
| Ticino, General San Martín | X5966 |
| Tío Pujio, General San Martín | X5990 |
| Villa Aurora, General San Martín | X5900 XAH |
| Villa del Parque, General San Martín | X5903 XAA |
| Villa Emilia, General San Martín | X5900 XAA |
| Villa María, General San Martín | X5900, X5901 |
| Villa Nueva, General San Martín | X5903 |