| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Arroyo, Capital | N3300 XAH |
| Postal/ZIP Codes in Barrio Don Santiago, Capital | N3312 |
| Postal/ZIP Codes in Don Horacio, Capital | N3300 XAI |
| Postal/ZIP Codes in El Reposo, Capital | N3300 XAJ |
| Postal/ZIP Codes in El Tropezón, Capital | N3300 XAK |
| Postal/ZIP Codes in Fachinal, Capital | N3300 XAP |
| Postal/ZIP Codes in Garupá, Capital | N3304 |
| Postal/ZIP Codes in Kilometro 595, Capital | N3300 XAD |
| Postal/ZIP Codes in La Milagrosa, Capital | N3300 XAE |
| Postal/ZIP Codes in La Rotonda, Capital | N3300 XAB |
| Postal/ZIP Codes in Las Vertientes, Capital | N3300 XAF |
| Postal/ZIP Codes in Miguel Lanús, Capital | N3310 |
| Postal/ZIP Codes in Posadas, Capital | N3300, N3301, N3303, N3305 |
| Postal/ZIP Codes in Puerto Luján, Capital | N3300 XAA |
| Postal/ZIP Codes in San Isidro, Capital | N3300 XBA |
| Postal/ZIP Codes in Villa Emilia, Capital | N3300 XAC |
| Postal/ZIP Codes in Villa Lanus, Capital | N3300 XBF |
| Postal/ZIP Codes in Villalonga, Capital | N3300 XBG |