| Official Zip Code Name | Westfield |
| Zip Code State | New Jersey |
| Primary County: | Union |
| Area Code | 908 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 129 ft. |
| Area | 0 Sqm. |
| Coordinates(Y,X) | 40.658900, -74.347900 |