The ZIP Code 6603 belongs to 3 zones en Argentina
| Province | Town | Código Postal | CPA | Phone Code |
|---|---|---|---|---|
| Buenos Aires | Ingeniero Williams | 6603 | B6605XAE | |
| Buenos Aires | Juan Jose Almeyra | 6603 | Search CPA | |
| Buenos Aires | Kilometro 117 | 6603 | B6603XAA |
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