Sullivan County, New Hampshire Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Sullivan 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 3 least wealthy counties in New Hampshire
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C
Education Below averageAmong the 3 least educated counties in New Hampshire
Source: Map AI Methodology
Population: density and quick facts
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Population | 43,677 | 1,394,471 | 337,468,954 |
| Population density (per sq mi) | 79.1 | 149.1 | 86.4 |
| Population growth (%/yr) | 0.19% | 0.62% | 0.59% |
| Median age | 48.4 | 41.3 | 37.3 |
| Households | 16,605 | 555,445 | 130,235,071 |
Population in Sullivan County grew by 2.4% from 2009 to 2024, reaching 43,677 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Sullivan 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 7,481 17.1% -2.8 pts
- Millennials 29–44 8,393 19.2% -1.3 pts
- Gen X 45–60 10,346 23.7% +0.7 pts
- Boomers 61–79 9,712 22.2% +3.0 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 49.9% of the people living in Sullivan County and men 50.1%.
- Women 49.9% New Hampshire 50.3%
- Men 50.1% New Hampshire 49.7%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Sullivan County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Sullivan County has a the economy index of B, which means it is quite prosperous.
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median household income | $79,965 | $99,079 | $80,455 |
| Income growth (%/yr) | 3.90% | 4.69% | 4.80% |
| Unemployment rate | 3.1% | 3.3% | 5.2% |
The median household income in Sullivan County is about 19% lower than in New Hampshire.
Housing
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Median home price | $343,386 | $300,691 | $248,835 |
| Median rent | $1,210 | $1,490 | $1,407 |
| Homeownership rate | 75.4% | 72.8% | 65.2% |
The median home price in Sullivan County is about 23.7 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,210 per month for that long.
Commute Time & Mobility
Commuters in Sullivan County spend about 47 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 196 hours, about 8.2 full days, spent commuting.
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 23.5 | 22.5 | 22.4 |
| Round-trip commute (min) | 47.0 | 45.0 | 44.8 |
| Yearly time spent (hours) | 196 | 188 | 187 |
| Estimated yearly cost | $6,066 | $5,813 | $5,790 |
| Work from home | 10.2% | 16.8% | 15.0% |
| Highway traffic (vehicles/day) | 3,821 | 8,168 | 8,813 |
| Local road traffic (vehicles/day) | 612 | 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 Sullivan 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
Sullivan County has a education index of C, which means it is somewhat educated.
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 28.2% | 36.2% | 31.6% |
| Average household size | 2.58 | 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
Sullivan County has a health index of B, which means it is quite healthy.
| Metric | Sullivan County | New Hampshire Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 80.0 | 80.2 | 78.3 |
| Self-rated poor health | 14.3% | 12.6% | 16.3% |
| Smokers | 18.0% | 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).
Sullivan County, NH Compared With Nearby Counties
Sullivan County, NH is the 5th largest of the 6 counties compared here, 43,677 residents against a local median of 57,919. Sullivan County, NH's median home price, at $343,386, runs 65% above the $208,297 typical of the counties around it.
The counties themselves spread $128,245 on median home price, so Sullivan County, NH sits at one end of an already wide local range rather than apart from it. Sullivan County, NH has the highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Sullivan County, NH | 43,677 | $79,965 #4/6 | $343,386 #1/6 | 23.5 min #6/6 |
| Windsor County, VT | 57,919 | $78,922 | $246,634 | 21.0 min |
| Cheshire County, NH | 77,281 | $82,926 | $208,297 | 18.6 min |
| Merrimack County, NH | 155,964 | $97,117 | $319,378 | 23.0 min |
| Windham County, VT | 45,878 | $72,854 | $191,132 | 18.1 min |
| Orange County, VT | 29,751 | $83,301 | $202,617 | 23.5 min |
Frequently Asked Questions
Common questions about Sullivan County, New Hampshire.
What is the population of Sullivan County, New Hampshire?
About 43,677 people live in Sullivan County, New Hampshire, in 16,605 households of 2.6 people on average. The median age is 48.4, so residents are older than the U.S. median of 37.3 by about 11 years.
How densely populated is Sullivan County, New Hampshire?
Averaged over its land area, Sullivan County, New Hampshire has 79 people per square mile, a density typical of rural areas. That is close to the U.S. average of 86.
Is Sullivan County, New Hampshire an affordable place to live?
The median home costs 4.3 times the median household income ($343,386 against $79,965), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,210 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in Sullivan County, New Hampshire?
Unemployment in Sullivan 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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