Total Population in Merrimack County, NH
ACS 2024 5-Year Estimates
155,967
Rank #446/3,222 · #3 in NH
86th
Merrimack 155,967
NH 1,394,868 -88.8%
US 330M
Total Population Trend
Rankings →Percentile Rank Over Time
Year-over-Year Population Change
National Distribution
How Merrimack County's total population of 155,967 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 Merrimack County for total population.
Nearby Rankings
Full ranking →| #443 | Johnson County, IA | 156,639 |
| #444 | Bibb County, GA | 156,578 |
| #445 | Santa Fe County, NM | 156,105 |
| #446 | Merrimack County, NH | 155,967 |
| #447 | Washington County, MD | 155,709 |
| #448 | Monroe County, MI | 155,505 |
| #449 | Penobscot County, ME | 154,710 |
About Total Population
Merrimack County, New Hampshire has a total population of 155,967, ranking #446 of 3,222 counties nationwide — 100.0% below the national value of 330M. Within New Hampshire, it ranks #3 of 10. This places it in the 86th 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.