Population
43,961
2025
+2.1% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Sullivan County, NH: population growth, jobs and income
Sullivan County gained 37 residents between 2024 and 2025 (+0.1%).
Sullivan County had an estimated 43,961 residents in 2025, up 2.1% (888 more people) since 2020. That is slower than New Hampshire as a whole (+2.7%), and the 9th fastest growth of 10 counties in New Hampshire.
Data as of 2025 · updated
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In the Sullivan County report
One-time $99 PDF: everything on this page for Sullivan County, ranked against New Hampshire and the U.S., plus these figures that are not on the free page:
- Median gross rent$1,211/mo2020–24
- Vacant homes, incl. seasonal and second homes24.3%2020–24
- New homes permitted, last 12 months1312025-10/2026-09
- 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
+232
2025
5.3 per 1,000 residents
+1,681 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
2.7%
2025
+0.2 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
New homes permitted
133
2025
+62.2% since 2021
3.0 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
$80,858
2020–24
+26.8% 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
12,071
2023
+4.8% 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 232 people in 2025: more people moved in from other U.S. counties than moved out.
Private employers had 12,071 paid employees in mid-March 2023, +4.8% since 2018 (County Business Patterns).
Unemployment averaged 2.7% in 2025, 0.2 points higher than in 2019 (before the pandemic).
Builders were authorized to start 133 new homes in 2025, or 3.0 per 1,000 residents.
Median household income was $80,858 in the 2020–24 American Community Survey, +26.8% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,264th.
Part of the Lebanon-Claremont, NH-VT micro area.
Get Sullivan County’s next numbers by email
Email me when Sullivan County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Sullivan County population by year
| Year | Population | Change |
|---|---|---|
| 2025 | 43,961 | +37 |
| 2024 | 43,924 | −84 |
| 2023 | 44,008 | +119 |
| 2022 | 43,889 | +270 |
| 2021 | 43,619 | +546 |
| 2020 | 43,073 | – |
Census Bureau population estimates, July 1 of each year.
What drove the change in Sullivan County
Sullivan County grew by 888 people since 2020; the largest part came from domestic migration (+1,681).
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −192 | −898 | |
| International migrationfrom and to other countries | −2 | +120 | |
| Domestic migrationfrom and to other U.S. counties | +232 | +1,681 | |
| Census adjustmentbalancing residual | −1 | −15 | |
| Total change | +37 | +888 |
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 | 9th of 10 | 1,264th of 3,107 |
| Net domestic migration per 1,000 residents | 6th of 10 | 1,026th of 3,108 |
| Private-sector job growth | 2nd of 10 | 1,239th of 3,092 |
| Median household income | 9th of 10 | 543rd of 3,107 |
| Lowest unemployment rate | 2nd of 10 | 211th of 3,108 |
| New homes permitted per 1,000 residents | 7th of 10 | 1,110th 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 Sullivan 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 Hillsborough County and Merrimack County reports too, $149 for all 3.
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Neighbouring counties
Over 2020–25, Sullivan County's population change (+2.1%) was ahead of 2 of its 6 neighbouring counties and behind 4.
4 of its 6 neighbouring counties had a higher median household income than Sullivan County's $80,858 (2020–24).
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Sullivan County, NH This county | 43,961 | +2.1% | 5.3 | 3.0 | $80,858 |
| Windsor County, VT | 57,312 | −0.7% | 0.6 | 2.1 | $77,594 |
| Cheshire County, NH | 78,269 | +2.3% | 3.9 | 2.1 | $83,329 |
| Merrimack County, NH | 158,078 | +2.6% | 5.1 | 1.8 | $97,004 |
| Windham County, VT | 45,204 | −1.4% | −0.1 | 2.7 | $72,217 |
| Hillsborough County, NH | 433,415 | +2.5% | 1.8 | 1.5 | $103,545 |
| 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 Sullivan County growing?
Yes. Its population grew 2.1% between 2020 and 2025, about 888 more people (Census Bureau population estimates). New Hampshire as a whole changed +2.7% over the same years. That ranks 9th of 10 counties in New Hampshire for population growth.
How many people moved to Sullivan County?
On net, about 232 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 Sullivan County?
It averaged 2.7% in 2025 (BLS Local Area Unemployment Statistics, annual average).
What is the population of Sullivan County?
About 43,961 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
How many jobs are in Sullivan County?
Private employers there had 12,071 paid employees in mid-March 2023, +4.8% 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.
Sullivan County data alerts
Email me when Sullivan 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.