New Castle, CO
ZIP Codes in New Castle, Colorado
January 18, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 81647 | 6,528 | 39.5791, -107.5329 |
New Castle has 1 ZIP code
ZIP Codes in New Castle, Colorado
January 18, 2026
| ZIP Code | Population | Coordinates |
|---|---|---|
| 81647 | 6,528 | 39.5791, -107.5329 |