| Official Zip Code Name | Merrimac |
| Zip Code State | Massachusetts |
| Primary County: | Essex |
| Area Code | 351/978 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 5 |
| Elevation Range | 123 ft. |
| Area | 8.499 Sqm. |
| Coordinates(Y,X) | 42.836580, -71.011550 |