| Official Zip Code Name | Williamstown |
| Zip Code State | New Jersey |
| Primary County: | Gloucester |
| Area Code | 856 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 105 ft. |
| Area | 54.771 Sqm. |
| Coordinates(Y,X) | 39.639721, -74.973074 |