| Name | Hillsborough County |
| State | New Hampshire |
| FIPS Code | 33011 |
| County Seat | Nashua |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 427,719 |
| Population Growth Rate(2020-2024) | 1.12% |
| Majority Ethnicity | White 84.57% |
| Public School Majority Ethnicity | White 71% |
| Partisan Voting Index | Democratic:+2 |
| Unemployment Rate (May 2026) | 3.8% |
| Sales Tax Rate (2025) | 0% |
| Area Code(s) | 603 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 84.57% |
| African American | 2.62% |
| Hispanic | 8.38% |
| Asian | 4.29% |
| Native American | 0.13% |
| Hawaiin/Pacific Islander | 0.01% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 71.24% |
| African American | 3.73% |
| Hispanic | 13.89% |
| Asian | 4.56% |
| Native American | 0.15% |
| Hawaiin/Pacific Islander | 0.07% |