| Place | Post Code |
|---|---|
| Cangrejal, Horconcitos | None |
| Horconcitos, Horconcitos | None |
| La Garita, Horconcitos | None |
| Marañón, Horconcitos | None |
| All postal codes in San Lorenzo | |
|---|---|
| Boca Chica, San Lorenzo | |
| Boca del Monte, San Lorenzo | |
| Horconcitos, San Lorenzo | |
| San Juan, San Lorenzo | |
| San Lorenzo, San Lorenzo | |