| Districts |
|---|
| Alto Saposoa, Huallaga |
| El Eslabón, Huallaga |
| Piscoyacu, Huallaga |
| Sacanche, Huallaga |
| Saposoa, Huallaga |
| TIingo de Saposoa, Huallaga |
| All postal codes in San Martín |
|---|
| Bellavista |
| El Dorado |
| Huallaga |
| Lamas |
| Mariscal Cáceres |
| Moyobamba |
| Picota |
| Rioja |
| San Martín |
| Tocache |