Belknap County, New Hampshire Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Belknap County, NH Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around averageAmong the 3 least healthy counties in New Hampshire
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B
Income Around averageAmong the top 5 wealthiest counties in New Hampshire
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B
Education Around averageAmong the 5 least educated counties in New Hampshire
Source: Map AI Methodology
Population: density and quick facts
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Population | 64,647 | 1,394,471 | 337,468,954 |
| Population density (per sq mi) | 137.5 | 149.1 | 86.4 |
| Population growth (%/yr) | 0.79% | 0.62% | 0.59% |
| Median age | 46.5 | 41.3 | 37.3 |
| Households | 26,254 | 555,445 | 130,235,071 |
Population in Belknap County grew by 4.8% from 2009 to 2024, reaching 64,647 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Belknap County is Gen X, aged 45–60, at 23.7% of residents. That is 0.7 points above New Hampshire as a whole.
- Gen Z 13–28 11,304 17.5% -2.4 pts
- Millennials 29–44 12,058 18.7% -1.9 pts
- Gen X 45–60 15,352 23.7% +0.7 pts
- Boomers 61–79 14,668 22.7% +3.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below New Hampshire, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 50.6% of the people living in Belknap County and men 49.4%.
- Women 50.6% New Hampshire 50.3%
- Men 49.4% New Hampshire 49.7%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Belknap County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Belknap County has a the economy index of B, which means it is quite prosperous.
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median household income | $93,156 | $99,079 | $80,455 |
| Income growth (%/yr) | 5.39% | 4.69% | 4.80% |
| Unemployment rate | 3.1% | 3.3% | 5.2% |
The median household income in Belknap County is about 6% lower than in New Hampshire.
Housing
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median home price | $233,409 | $300,691 | $248,835 |
| Median rent | $1,166 | $1,490 | $1,407 |
| Homeownership rate | 80.1% | 72.8% | 65.2% |
The median home price in Belknap County is about 16.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,166 per month for that long.
Commute Time & Mobility
Commuters in Belknap County spend about 41 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 170 hours, about 7.1 full days, spent commuting.
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 20.4 | 22.5 | 22.4 |
| Round-trip commute (min) | 40.8 | 45.0 | 44.8 |
| Yearly time spent (hours) | 170 | 188 | 187 |
| Estimated yearly cost | $5,275 | $5,813 | $5,790 |
| Work from home | 13.5% | 16.8% | 15.0% |
| Highway traffic (vehicles/day) | 6,622 | 8,168 | 8,813 |
| Local road traffic (vehicles/day) | 1,106 | 1,232 | 1,355 |
Fastest commutes among counties in
New Hampshire:
Coos County (17.5 min), Grafton County (17.5 min), Cheshire County (18.6 min).
Slowest:
Rockingham County (25.8 min), Sullivan County (23.5 min), Merrimack County (23.0 min).
The average commute time in Belknap County is 20 minutes, shorter than the 23 minutes in New Hampshire.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Belknap County has a education index of B, which means it is quite educated.
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 30.4% | 36.2% | 31.6% |
| Average household size | 2.41 | 2.44 | 2.53 |
Highest education index among counties in
New Hampshire:
Rockingham County (0.4), Grafton County (0.4), Hillsborough County (0.3).
Lowest:
Coos County (0.2), Sullivan County (0.3), Cheshire County (0.3).
Health
Belknap County has a health index of B, which means it is quite healthy.
| Metric | Belknap County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 80.2 | 80.2 | 78.3 |
| Self-rated poor health | 12.5% | 12.6% | 16.3% |
| Smokers | 16.2% | 16.0% | 19.0% |
Highest health index among counties in
New Hampshire:
Rockingham County (0.8), Merrimack County (0.8), Grafton County (0.8).
Lowest:
Coos County (0.8), Sullivan County (0.8), Belknap County (0.8).
Belknap County, NH Compared With Nearby Counties
Belknap County, NH is the 5th largest of the 6 counties compared here, 64,647 residents against a local median of 132,534. Belknap County, NH's median home price, at $233,409, runs 21% below the $294,696 typical of the counties around it.
The counties themselves spread $238,871 on median home price, so Belknap County, NH sits at one end of an already wide local range rather than apart from it. Belknap County, NH has the 6th highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Belknap County, NH | 64,647 | $93,156 #3/6 | $233,409 #6/6 | 20.4 min #2/6 |
| Merrimack County, NH | 155,964 | $97,117 | $319,378 | 23.0 min |
| Carroll County, NH | 51,798 | $86,264 | $294,696 | 21.3 min |
| Strafford County, NH | 132,534 | $91,007 | $237,678 | 22.0 min |
| Grafton County, NH | 92,112 | $89,036 | $272,189 | 17.5 min |
| Rockingham County, NH | 319,036 | $118,478 | $476,549 | 25.8 min |
Frequently Asked Questions
Common questions about Belknap County, New Hampshire.
How big is Belknap County, New Hampshire by population?
About 64,647 people live in Belknap County, New Hampshire, in 26,254 households of 2.4 people on average. The median age is 46.5, so residents are older than the U.S. median of 37.3 by about 9 years.
Is Belknap County, New Hampshire urban or rural?
Averaged over its land area, Belknap County, New Hampshire has 138 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 1.6 times the U.S. average of 86.
Is Belknap County, New Hampshire an affordable place to live?
The median home costs 2.5 times the median household income ($233,409 against $93,156), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,166 a month takes about 15% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in Belknap County, New Hampshire?
Unemployment in Belknap County, New Hampshire is only 3.1%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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