| Place Name | Middlesex |
| Place Type | Borough |
| ZIP Code(s) | 08846 |
| County | Middlesex County |
| Area Code(s) | 732,848 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 13,661 |
| Population Growth Rate (2010-19) | 7.34% |
| Majority Ethnicity | White 59.68% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 12th |
| State Assembly Districts | 22 |
| State Senate Districts | 22 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 59.68% |
| African American | 5.22% |
| Hispanic | 1.94% |
| Asian | 6.57% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 26.59% |