Coos County, New Hampshire
Located in New Hampshire, Coos County has a population of 31,271 residents and a median age of 50.3 years, making it the #1,440 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 13.2%. The median home value is $188,900, and the median household income is $57,677, which is 23% below the national median.
Demographics
Coos County has a population of 31,271, making it the #1,440 most populous county in the US. The median age is 50.3 years, which is 29.3% 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 Coos County is $57,677, ranking #2,290 out of 3,222 counties — 23.2% below the national median. The poverty rate is 13.2% and unemployment stands at 4.3%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Coos County is $188,900 (-33.0% vs national). Renters pay a median of $876/mo and the homeownership rate is 74.2%.
Median Home Value Trend
Rankings →Household Type
Education
In Coos County, 20.1% of adults age 25+ hold a bachelor's degree or higher, which is 40.4% below the national average, ranking #1,988 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Coos County is 73.9 years. 16.7% of adults report poor or fair health and 7.7% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
17.5% of adults in Coos County smoke , 35.9% are obese , and 21.0% report excessive drinking. The drug overdose death rate is 57.5 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 24.0 per 100,000. Motor vehicle deaths occur at a rate of 16.8 per 100,000.
Suicide Rate Trend
Families & Children
17.6% of children in Coos County live in poverty . The teen birth rate is 14.2 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Coos County is 63.3%. The mean commute time is 25.1 min, which is 9.2% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Coos County voted Republican with a margin of 13.8%. The vote was 42.7% Dem / 56.5% Rep. Compared to 2020, the margin shifted 7.9 toward Republicans .
Vote Share Over Time
About Coos County, New Hampshire
Coos County, New Hampshire has a total population of 31,271, making it the 1,440th most populous county in the United States. The median age in Coos County is 50.3 years, which is 29.3% above the national median of 38.9 years.
The median household income in Coos County is $57,677, which ranks #2,290 of 3,222 counties nationwide. This is 23.2% below the national median of $75,149. The poverty rate is 13.2%, higher than the national rate of 12.6%. The unemployment rate stands at 4.3%.
The median home value in Coos County is $188,900, 33.0% below the national median. Renters in Coos County pay a median gross rent of $876 per month. The homeownership rate is 74.2%, compared to the national rate of 64.4%.
In Coos County, 20.1% of residents aged 25 and older hold a bachelor's degree or higher, 40.4% below the national average of 33.7%. Health insurance coverage stands at 92.3% of the population. The average commute time for workers is 25.1 min.
Coos County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 91.9% of the population, followed by Two or More Races (2.9%) and Hispanic or Latino (2.4%).
All data for Coos 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.