| Name | Middlesex County |
| State | New Jersey |
| FIPS Code | 34023 |
| County Seat | New Brunswick |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 811,064 |
| Population Growth Rate(2000-2022) | 6.58% |
| Majority Ethnicity | White 57.16% |
| Public School Majority Ethnicity | Hispanic 34% |
| Partisan Voting Index | Democratic:+13 |
| Unemployment Rate (January 2025) | 3.9% |
| Area Code(s) | 732 / 848 / 609 / 640 / / 908 |
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 57.16% |
| African American | 12.22% |
| Hispanic | 0.71% |
| Asian | 29.82% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.05% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 23.33% |
| African American | 9.69% |
| Hispanic | 34.13% |
| Asian | 29.74% |
| Native American | 0.42% |
| Hawaiin/Pacific Islander | 0.21% |