Sullivan County, New Hampshire
Located in New Hampshire, Sullivan County has a population of 43,715 residents and a median age of 47.0 years, making it the #1,128 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 10.1%. The median home value is $268,700, and the median household income is $80,858, which is 8% above the national median.
Demographics
Sullivan County has a population of 43,715, making it the #1,128 most populous county in the US. The median age is 47.0 years, which is 20.8% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Sullivan County is $80,858, ranking #545 out of 3,222 counties — 7.6% above the national median. The poverty rate is 10.1% and unemployment stands at 3.1%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Sullivan County is $268,700 (-4.7% vs national). Renters pay a median of $1,211/mo and the homeownership rate is 75.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Sullivan County, 30.3% of adults age 25+ hold a bachelor's degree or higher, which is 10.1% below the national average, ranking #741 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Sullivan County is 78.0 years. 15.6% of adults report poor or fair health and 7.0% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
15.5% of adults in Sullivan County smoke , 32.3% are obese , and 21.9% report excessive drinking. The drug overdose death rate is 38.2 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 15.4 per 100,000. Motor vehicle deaths occur at a rate of 12.5 per 100,000.
Suicide Rate Trend
Families & Children
12.0% of children in Sullivan County live in poverty . The teen birth rate is 13.8 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Sullivan County is 70.0%. The mean commute time is 28.6 min, which is 3.7% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Sullivan County voted Republican with a margin of 0.7%. The vote was 49.1% Dem / 49.8% Rep. Compared to 2020, the margin shifted 4.3 toward Republicans .
Vote Share Over Time
About Sullivan County, New Hampshire
Sullivan County, New Hampshire has a total population of 43,715, making it the 1,128th most populous county in the United States. The median age in Sullivan County is 47.0 years, which is 20.8% above the national median of 38.9 years.
The median household income in Sullivan County is $80,858, which ranks #545 of 3,222 counties nationwide. This is 7.6% above the national median of $75,149. The poverty rate is 10.1%, lower than the national rate of 12.6%. The unemployment rate stands at 3.1%.
The median home value in Sullivan County is $268,700, 4.7% below the national median. Renters in Sullivan County pay a median gross rent of $1,211 per month. The homeownership rate is 75.4%, compared to the national rate of 64.4%.
In Sullivan County, 30.3% of residents aged 25 and older hold a bachelor's degree or higher, 10.1% below the national average of 33.7%. Health insurance coverage stands at 94.0% of the population. The average commute time for workers is 28.6 min.
Sullivan County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.4% of the population, followed by Two or More Races (5.1%) and Hispanic or Latino (2.1%).
All data for Sullivan County, New Hampshire comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.