Rockingham County, New Hampshire
Located in New Hampshire, Rockingham County has a population of 319,082 residents and a median age of 45.0 years, making it the #228 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 4.8%. The median home value is $497,500, and the median household income is $118,331, which is 57% above the national median.
Demographics
Rockingham County has a population of 319,082, making it the #228 most populous county in the US. The median age is 45.0 years, which is 15.7% 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 Rockingham County is $118,331, ranking #60 out of 3,222 counties — 57.5% above the national median. The poverty rate is 4.8% and unemployment stands at 3.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Rockingham County is $497,500 (+76.5% vs national). Renters pay a median of $1,687/mo and the homeownership rate is 78.4%.
Median Home Value Trend
Rankings →Household Type
Education
In Rockingham County, 45.7% of adults age 25+ hold a bachelor's degree or higher, which is 35.6% above the national average, ranking #160 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Rockingham County is 80.5 years. 12.1% of adults report poor or fair health and 4.9% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
12.7% of adults in Rockingham County smoke , 31.7% are obese , and 24.5% report excessive drinking. The drug overdose death rate is 23.0 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Rockingham County is 0.8 per 100,000 and the suicide rate is 13.3 per 100,000. Motor vehicle deaths occur at a rate of 7.1 per 100,000.
Homicide Rate Trend
Families & Children
5.2% of children in Rockingham County live in poverty and the infant mortality rate is 2.7 per 1,000 live births. The teen birth rate is 3.1 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Rockingham County is 81.6%. The mean commute time is 31.6 min, which is 14.6% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Rockingham County voted Republican with a margin of 2.5%. The vote was 48.3% Dem / 50.8% Rep. Compared to 2020, the margin shifted 4.6 toward Republicans .
Vote Share Over Time
About Rockingham County, New Hampshire
Rockingham County, New Hampshire has a total population of 319,082, making it the 228th most populous county in the United States. The median age in Rockingham County is 45.0 years, which is 15.7% above the national median of 38.9 years.
The median household income in Rockingham County is $118,331, which ranks #60 of 3,222 counties nationwide. This is 57.5% above the national median of $75,149. The poverty rate is 4.8%, lower than the national rate of 12.6%. The unemployment rate stands at 3.5%.
The median home value in Rockingham County is $497,500, 76.5% above the national median. Renters in Rockingham County pay a median gross rent of $1,687 per month. The homeownership rate is 78.4%, compared to the national rate of 64.4%.
In Rockingham County, 45.7% of residents aged 25 and older hold a bachelor's degree or higher, 35.6% above the national average of 33.7%. Health insurance coverage stands at 95.9% of the population. The average commute time for workers is 31.6 min.
Rockingham County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 89.5% of the population, followed by Hispanic or Latino (3.7%) and Two or More Races (3.6%).
All data for Rockingham 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.