Dukes County, Massachusetts
Located in Massachusetts, Dukes County has a population of 20,933 residents and a median age of 50.7 years, making it the #1,826 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 4.4%. The median home value is $1.2M, and the median household income is $125,786, which is 67% above the national median.
Demographics
Dukes County has a population of 20,933, making it the #1,826 most populous county in the US. The median age is 50.7 years, which is 30.3% 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 Dukes County is $125,786, ranking #40 out of 3,222 counties — 67.4% above the national median. The poverty rate is 4.4% and unemployment stands at 6.6%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Dukes County is $1.2M (+313.6% vs national). Renters pay a median of $1,277/mo and the homeownership rate is 82.1%.
Median Home Value Trend
Rankings →Household Type
Education
In Dukes County, 51.9% of adults age 25+ hold a bachelor's degree or higher, which is 54.0% above the national average, ranking #76 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Dukes County is 83.1 years. 12.7% of adults report poor or fair health and 4.1% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
11.0% of adults in Dukes County smoke , 28.6% are obese , and 23.2% report excessive drinking. The drug overdose death rate is 33.7 per 100,000.
Adult Smoking Trend
Safety
The suicide rate is 19.0 per 100,000.
Suicide Rate Trend
Families & Children
11.6% of children in Dukes County live in poverty . The teen birth rate is 5.6 per 1,000 females age 15–19.
Teen Birth Rate Trend
Civic & Transportation
Voter turnout in Dukes County is 95.0%. The mean commute time is 17.9 min, which is 35.0% below the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Dukes County voted Democratic with a margin of 52.6%. The vote was 75.2% Dem / 22.6% Rep. Compared to 2020, the margin shifted 4.3 toward Republicans .
Vote Share Over Time
About Dukes County, Massachusetts
Dukes County, Massachusetts has a total population of 20,933, making it the 1,826th most populous county in the United States. The median age in Dukes County is 50.7 years, which is 30.3% above the national median of 38.9 years.
The median household income in Dukes County is $125,786, which ranks #40 of 3,222 counties nationwide. This is 67.4% above the national median of $75,149. The poverty rate is 4.4%, lower than the national rate of 12.6%. The unemployment rate stands at 6.6%.
The median home value in Dukes County is $1.2M, 313.6% above the national median. Renters in Dukes County pay a median gross rent of $1,277 per month. The homeownership rate is 82.1%, compared to the national rate of 64.4%.
In Dukes County, 51.9% of residents aged 25 and older hold a bachelor's degree or higher, 54.0% above the national average of 33.7%. Health insurance coverage stands at 97.9% of the population. The average commute time for workers is 17.9 min.
Dukes County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 80.0% of the population, followed by Two or More Races (8.6%) and Hispanic or Latino (3.3%).
All data for Dukes County, Massachusetts 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.