Population
1,415,342
2025
+2.7% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
What are the fastest-growing counties in New Hampshire?
Carroll County (+5.0%), Strafford County (+3.0%) and Rockingham County (+3.0%) grew fastest in New Hampshire between 2020 and 2025.
New Hampshire as a whole grew 2.7% between 2020 and 2025, to 1,415,342 residents.
Data as of 2025 · updated
Map, parcel and listing layers cover North and South Carolina only for now.
All 10 New Hampshire counties ranked
| Rank | County | Residents 2025 | Change 2020–25 | Net migration per 1,000, 2025 | New homes per 1,000, 2025 |
|---|---|---|---|---|---|
| 1 | Carroll County | 52,784 | +5.0% | 10.6 | 9.6 |
| 2 | Strafford County | 135,043 | +3.0% | 5.6 | 3.3 |
| 3 | Rockingham County | 324,077 | +3.0% | 6.0 | 5.8 |
| 4 | Merrimack County | 158,078 | +2.6% | 5.1 | 1.8 |
| 5 | Hillsborough County | 433,415 | +2.5% | 1.8 | 1.5 |
| 6 | Cheshire County | 78,269 | +2.3% | 3.9 | 2.1 |
| 7 | Grafton County | 93,225 | +2.2% | 5.2 | 4.4 |
| 8 | Belknap County | 65,147 | +2.1% | 6.4 | 6.5 |
| 9 | Sullivan County | 43,961 | +2.1% | 5.3 | 3.0 |
| 10 | Coos County | 31,343 | +0.3% | 8.8 | 4.8 |
Ranked by the change in Census Bureau population estimates, 2020–2025.
Statewide totals
Net domestic migration
+6,554
2025
4.6 per 1,000 residents
+34,962 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
New homes permitted
5,030
2025
+2.8% since 2021
3.6 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
Private-sector employment
582,461
2023
+1.4% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
More county rankings for New Hampshire
Metro areas
- Boston-Cambridge-Newton, MA-NH
- Concord, NH
- Keene, NH
- Laconia, NH
- Lebanon-Claremont, NH-VT
- Manchester-Nashua, NH
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Questions
Is New Hampshire growing?
New Hampshire as a whole grew 2.7% between 2020 and 2025, to 1,415,342 residents. Statewide figures add up its counties.
What is the fastest-growing county in New Hampshire?
Carroll County, which grew 5.0% between 2020 and 2025 to 52,784 residents (Census Bureau population estimates). Strafford County (+3.0%) and Rockingham County (+3.0%) came next.
Which New Hampshire counties are losing population?
None of the 10 ranked counties lost residents between 2020 and 2025.
Where are people moving in New Hampshire?
For their size, Carroll County (10.6 per 1,000 residents), Coos County (8.8 per 1,000 residents) and Belknap County (6.4 per 1,000 residents) drew the most net domestic migration (people moving in from other U.S. counties minus people moving out) in 2025.
Fastest-growing counties in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Sources and method
- U.S. Census Bureau, Population Estimates Program (Vintage 2025)
- U.S. Census Bureau, Building Permits Survey
- U.S. Census Bureau, County Business Patterns
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.