Find complete information about all ZIP codes in New-castle, Pennsylvania. Our interactive map shows the postal code boundaries and locations throughout the city.
The postal system in New-castle is organized to efficiently serve both residential and commercial areas. Each ZIP code represents a specific delivery zone within the city limits.

| City | Name | Zip Code | Type | Population |
|---|---|---|---|---|
| New Castle, PA | PRIMARY | 16101 | STANDARD | 25.595 |
| New Castle, PA | PRIMARY | 16102 | STANDARD | 4.613 |
| New Castle, PA | PRIMARY | 16103 | PO BOX | indefined |
| New Castle, PA | PRIMARY | 16105 | STANDARD | 13.571 |
| New Castle, PA | PRIMARY | 16107 | PO BOX | indefined |
| New Castle, PA | PRIMARY | 16108 | STANDARD | indefined |
| City | Name | Zip Code | Type | Population |
|---|---|---|---|---|
| New Castle, PA | PRIMARY | 16101 | STANDARD | 25.595 |
| New Castle, PA | PRIMARY | 16102 | STANDARD | 4.613 |
| New Castle, PA | PRIMARY | 16103 | PO BOX | indefined |
| New Castle, PA | PRIMARY | 16105 | STANDARD | 13.571 |
| New Castle, PA | PRIMARY | 16107 | PO BOX | indefined |
| New Castle, PA | PRIMARY | 16108 | STANDARD | indefined |