Total Population in Hillsborough County, NH
ACS 2024 5-Year Estimates
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Hillsborough County's total population of 426,378 compares to all 3,222 U.S. counties. Values range from 33 to 9,808,667.
Distribution of Total Population Across All Counties
Ranking Context
Counties ranked closest to Hillsborough County for total population.
Nearby Rankings
Full ranking →| #169 | Manatee County, FL | 429,792 |
| #170 | Lucas County, OH | 428,018 |
| #171 | Osceola County, FL | 427,415 |
| #172 | Hillsborough County, NH | 426,378 |
| #173 | Cameron County, TX | 426,120 |
| #174 | Clackamas County, OR | 423,975 |
| #175 | Richland County, SC | 422,117 |
About Total Population
Hillsborough County, New Hampshire has a total population of 426,378, ranking #172 of 3,222 counties nationwide — 99.9% below the national value of 330M. Within New Hampshire, it ranks #1 of 10. This places it in the 95th percentile nationally.
Total population count from the American Community Survey. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.