Hillsborough County, New Hampshire Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Hillsborough 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 5 least healthy counties in New Hampshire
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B
Income Around averageAmong the top 3 wealthiest counties in New Hampshire
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B
Education Around averageAmong the top 3 best educated counties in New Hampshire
Source: Map AI Methodology
Population: density and quick facts
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Population | 426,152 | 1,394,471 | 337,468,954 |
| Population density (per sq mi) | 477.3 | 149.1 | 86.4 |
| Population growth (%/yr) | 0.65% | 0.62% | 0.59% |
| Median age | 41.8 | 41.3 | 37.3 |
| Households | 168,621 | 555,445 | 130,235,071 |
Population in Hillsborough County grew by 5.6% from 2009 to 2024, reaching 426,152 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Hillsborough County is Gen X, aged 45–60, at 22.6% of residents. That is 0.4 points below New Hampshire as a whole.
- Gen Z 13–28 86,553 20.3% +0.4 pts
- Millennials 29–44 94,761 22.2% +1.7 pts
- Gen X 45–60 96,375 22.6% -0.4 pts
- Boomers 61–79 71,766 16.8% -2.4 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 50.1% of the people living in Hillsborough County and men 49.9%.
- Women 50.1% New Hampshire 50.3%
- Men 49.9% New Hampshire 49.7%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Hillsborough County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Hillsborough County has a the economy index of B, which means it is quite prosperous.
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median household income | $103,775 | $99,079 | $80,455 |
| Income growth (%/yr) | 4.46% | 4.69% | 4.80% |
| Unemployment rate | 3.1% | 3.3% | 5.2% |
The median household income in Hillsborough County is about 5% higher than in New Hampshire.
Housing
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median home price | $286,603 | $300,691 | $248,835 |
| Median rent | $1,623 | $1,490 | $1,407 |
| Homeownership rate | 67.4% | 72.8% | 65.2% |
The median home price in Hillsborough County is about 14.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,623 per month for that long.
Commute Time & Mobility
Commuters in Hillsborough County spend about 46 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 190 hours, about 7.9 full days, spent commuting.
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 22.8 | 22.5 | 22.4 |
| Round-trip commute (min) | 45.5 | 45.0 | 44.8 |
| Yearly time spent (hours) | 190 | 188 | 187 |
| Estimated yearly cost | $5,882 | $5,813 | $5,790 |
| Work from home | 18.1% | 16.8% | 15.0% |
| Highway traffic (vehicles/day) | 12,602 | 8,168 | 8,813 |
| Local road traffic (vehicles/day) | 1,801 | 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 Hillsborough County is about the same as 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
Hillsborough County has a education index of B, which means it is quite educated.
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 37.6% | 36.2% | 31.6% |
| Average household size | 2.48 | 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
Hillsborough County has a health index of B, which means it is quite healthy.
| Metric | Hillsborough County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.1 | 80.2 | 78.3 |
| Self-rated poor health | 12.2% | 12.6% | 16.3% |
| Smokers | 15.3% | 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).
Hillsborough County, NH Compared With Nearby Counties
Hillsborough County, NH is the 3rd largest of the 6 counties compared here, 426,152 residents against a local median of 319,036. Hillsborough County, NH's median home price, at $286,603, runs 19% below the $351,801 typical of the counties around it.
The counties themselves spread $510,137 on median home price, so Hillsborough County, NH sits at one end of an already wide local range rather than apart from it. Hillsborough County, NH has the 5th highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Hillsborough County, NH | 426,152 | $103,775 #3/6 | $286,603 #5/6 | 22.8 min #2/6 |
| Merrimack County, NH | 155,964 | $97,117 | $319,378 | 23.0 min |
| Cheshire County, NH | 77,281 | $82,926 | $208,297 | 18.6 min |
| Middlesex County, MA | 1,636,094 | $131,269 | $718,434 | 28.4 min |
| Worcester County, MA | 867,628 | $95,680 | $351,801 | 24.0 min |
| Rockingham County, NH | 319,036 | $118,478 | $476,549 | 25.8 min |
Frequently Asked Questions
Common questions about Hillsborough County, New Hampshire.
How big is Hillsborough County, New Hampshire by population?
About 426,152 people live in Hillsborough County, New Hampshire, in 168,621 households of 2.5 people on average. The median age is 41.8, so residents are older than the U.S. median of 37.3 by about 4 years.
How densely populated is Hillsborough County, New Hampshire?
Averaged over its land area, Hillsborough County, New Hampshire has 477 people per square mile, a density typical of a mix of suburbs, small towns and farmland. That is about 5.5 times the U.S. average of 86.
Can a typical household afford a home in Hillsborough County, New Hampshire?
The median home costs 2.8 times the median household income ($286,603 against $103,775), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $1,623 a month takes about 19% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Hillsborough County, New Hampshire?
Unemployment in Hillsborough 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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