Coos County, New Hampshire Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Coos 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 averageLeast healthy county in New Hampshire
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D
Income Well below averageLeast wealthy county in New Hampshire
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D
Education Well below averageLeast educated county in New Hampshire
Source: Map AI Methodology
Population: density and quick facts
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Population | 31,270 | 1,394,471 | 337,468,954 |
| Population density (per sq mi) | 17.1 | 149.1 | 86.4 |
| Population growth (%/yr) | -0.37% | 0.62% | 0.59% |
| Median age | 50.4 | 41.3 | 37.3 |
| Households | 13,996 | 555,445 | 130,235,071 |
Population in Coos County declined by 3.1% from 2009 to 2024, reaching 31,270 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Coos County is Boomers, aged 61–79, at 25.0% of residents. That is 5.7 points above New Hampshire as a whole.
- Gen Z 13–28 4,964 15.9% -4.0 pts
- Millennials 29–44 5,848 18.7% -1.8 pts
- Gen X 45–60 7,426 23.7% +0.7 pts
- Boomers 61–79 7,806 25.0% +5.7 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 47.5% of the people living in Coos County and men 52.5%.
- Women 47.5% New Hampshire 50.3%
- Men 52.5% New Hampshire 49.7%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Coos County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Coos County has a the economy index of D, which means it is barely prosperous.
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median household income | $58,040 | $99,079 | $80,455 |
| Income growth (%/yr) | 3.22% | 4.69% | 4.80% |
| Unemployment rate | 4.3% | 3.3% | 5.2% |
The median household income in Coos County is about 41% lower than in New Hampshire.
Housing
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median home price | $170,294 | $300,691 | $248,835 |
| Median rent | $875 | $1,490 | $1,407 |
| Homeownership rate | 74.2% | 72.8% | 65.2% |
The median home price in Coos County is about 16.2 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $875 per month for that long.
Commute Time & Mobility
Commuters in Coos County spend about 35 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 146 hours, about 6.1 full days, spent commuting.
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 17.5 | 22.5 | 22.4 |
| Round-trip commute (min) | 35.0 | 45.0 | 44.8 |
| Yearly time spent (hours) | 146 | 188 | 187 |
| Estimated yearly cost | $4,521 | $5,813 | $5,790 |
| Work from home | 8.0% | 16.8% | 15.0% |
| Highway traffic (vehicles/day) | 1,740 | 8,168 | 8,813 |
| Local road traffic (vehicles/day) | 456 | 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 Coos County is 18 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
Coos County has a education index of D, which means it is barely educated.
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 19.7% | 36.2% | 31.6% |
| Average household size | 2.08 | 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
Coos County has a health index of B, which means it is quite healthy.
| Metric | Coos County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 78.8 | 80.2 | 78.3 |
| Self-rated poor health | 16.0% | 12.6% | 16.3% |
| Smokers | 19.3% | 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).
Coos County, NH Compared With Nearby Counties
Coos County, NH is the 3rd largest of the 5 counties compared here, 31,270 residents against a local median of 41,131. Where Coos County, NH breaks from the counties next to it is commute, sitting 18% below the local median of 21.3 min at 17.5 min. That is the better end of the local range on this measure.
The counties themselves spread 4.7 min on commute, so Coos County, NH sits at one end of an already wide local range rather than apart from it. Coos County, NH has the lowest commute of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Coos County, NH | 31,270 | $58,040 #5/5 | $170,294 #3/5 | 17.5 min #1/5 |
| Oxford County, ME | 59,255 | $60,170 | $215,519 | 23.4 min |
| Carroll County, NH | 51,798 | $86,264 | $294,696 | 21.3 min |
| Caledonia County, VT | 30,464 | $70,885 | $114,570 | 21.3 min |
| Franklin County, ME | 30,413 | $58,418 | $98,874 | 18.7 min |
Frequently Asked Questions
Common questions about Coos County, New Hampshire.
How big is Coos County, New Hampshire by population?
About 31,270 people live in Coos County, New Hampshire, in 13,996 households of 2.1 people on average. The median age is 50.4, so residents are older than the U.S. median of 37.3 by about 13 years.
Is Coos County, New Hampshire urban or rural?
Averaged over its land area, Coos County, New Hampshire has 17 people per square mile, a density typical of rural areas. That is about 20% of the U.S. average of 86.
How affordable is housing in Coos County, New Hampshire?
The median home costs 2.9 times the median household income ($170,294 against $58,040), compared with 3.1 times nationally. That is within the traditional rule of thumb of about 3 times income. Median rent of $875 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How common is a college degree in Coos County, New Hampshire?
19.7% of adults in Coos County, New Hampshire hold a bachelor's degree or higher (about 1 in 5), well below the U.S. share of 31.6%.
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