Population
65,147
2025
+2.1% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Belknap County, NH: population growth, jobs and income
Belknap County lost 22 residents between 2024 and 2025 (−0.0%).
Belknap County had an estimated 65,147 residents in 2025, up 2.1% (1,368 more people) since 2020. That is slower than New Hampshire as a whole (+2.7%), and the 8th fastest growth of 10 counties in New Hampshire.
Data as of 2025 · updated
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In the Belknap County report
One-time $99 PDF: everything on this page for Belknap County, ranked against New Hampshire and the U.S., plus these figures that are not on the free page:
- Median gross rent$1,167/mo2020–24
- Vacant homes, incl. seasonal and second homes32.5%2020–24
- New homes permitted, last 12 months4802025-10/2026-09
- Rent growth, 5 yearsIn the report
- Permits in 5+ unit buildingsIn the report
- IRS income moving in (net AGI)In the report
- Neighbouring-county comparison tableIn the report
What's inside: 5 pages
- 1 Summary, headline numbers and ranks (free preview)
- 2 Ranks and the neighbouring-county table
- 3 Migration, with IRS mover and income flows
- 4 Rent, vacant homes, permits and employers
- 5 Every source and the methods
Headline numbers
Net domestic migration
+415
2025
6.4 per 1,000 residents
+3,374 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.
Unemployment rate
3.0%
2025
+0.6 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
New homes permitted
423
2025
−2.3% since 2021
6.5 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
Median household income
$92,783
2020–24
+37.8% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
Private-sector employment
21,197
2023
+0.1% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
What the numbers say
Net domestic migration added 415 people in 2025: more people moved in from other U.S. counties than moved out.
Private employers had 21,197 paid employees in mid-March 2023, +0.1% since 2018 (County Business Patterns).
Unemployment averaged 3.0% in 2025, 0.6 points higher than in 2019 (before the pandemic).
Builders were authorized to start 423 new homes in 2025, or 6.5 per 1,000 residents.
Median household income was $92,783 in the 2020–24 American Community Survey, +37.8% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,239th.
Part of the Laconia, NH micro area.
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Belknap County population by year
| Year | Population | Change |
|---|---|---|
| 2025 | 65,147 | −22 |
| 2024 | 65,169 | +130 |
| 2023 | 65,039 | +396 |
| 2022 | 64,643 | +31 |
| 2021 | 64,612 | +833 |
| 2020 | 63,779 | – |
Census Bureau population estimates, July 1 of each year.
What drove the change in Belknap County
Belknap County grew by 1,368 people since 2020; the largest part came from domestic migration (+3,374).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −418 | −1,955 | |
| International migrationfrom and to other countries | −13 | −9 | |
| Domestic migrationfrom and to other U.S. counties | +415 | +3,374 | |
| Census adjustmentbalancing residual | −6 | −42 | |
| Total change | −22 | +1,368 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
How it ranks
| Measure | In New Hampshire | Among U.S. counties |
|---|---|---|
| Population growth | 8th of 10 | 1,239th of 3,107 |
| Net domestic migration per 1,000 residents | 3rd of 10 | 893rd of 3,108 |
| Private-sector job growth | 6th of 10 | 1,858th of 3,092 |
| Median household income | 4th of 10 | 255th of 3,107 |
| Lowest unemployment rate | 6th of 10 | 411th of 3,108 |
| New homes permitted per 1,000 residents | 2nd of 10 | 408th of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
Get the county report — $99
The County Growth and Demographics Report for Belknap County, NH as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
Add 2 neighbouring counties for $50: the Merrimack County and Strafford County reports too, $149 for all 3.
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Neighbouring counties
Belknap County grew more slowly than all 4 of its neighbouring counties (+2.1%, 2020–25).
Only Merrimack County had a higher median household income (2020–24) among its 4 neighbouring counties; Belknap County's was $92,783.
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Belknap County, NH This county | 65,147 | +2.1% | 6.4 | 6.5 | $92,783 |
| Merrimack County, NH | 158,078 | +2.6% | 5.1 | 1.8 | $97,004 |
| Carroll County, NH | 52,784 | +5.0% | 10.6 | 9.6 | $86,463 |
| Strafford County, NH | 135,043 | +3.0% | 5.6 | 3.3 | $88,570 |
| Grafton County, NH | 93,225 | +2.2% | 5.2 | 4.4 | $88,261 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Questions
Is Belknap County growing?
Yes. Its population grew 2.1% between 2020 and 2025, about 1,368 more people (Census Bureau population estimates). New Hampshire as a whole changed +2.7% over the same years. That ranks 8th of 10 counties in New Hampshire for population growth.
How many people moved to Belknap County?
On net, about 415 people in 2025: that many more moved in from other U.S. counties than moved out (Census Bureau net domestic migration estimate).
What is the unemployment rate in Belknap County?
It averaged 3.0% in 2025 (BLS Local Area Unemployment Statistics, annual average).
What is the population of Belknap County?
About 65,147 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
How many jobs are in Belknap County?
Private employers there had 21,197 paid employees in mid-March 2023, +0.1% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
What Beacon CRE covers in New Hampshire
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other New Hampshire county pages carry the public federal growth figures.
Belknap County data alerts
Email me when Belknap County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Sources and method
- U.S. Census Bureau, Population Estimates Program (Vintage 2025)
- U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics
- U.S. Census Bureau, Building Permits Survey
- U.S. Census Bureau, American Community Survey 5-year estimates
- 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.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.