Dukes County's 2026 population is estimated at 21,425, reflecting a 0.86% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dukes County is the 13th largest county in Massachusetts. The 2010 population was 16,573 and has grown 29.28% since 2010.
Data after 2023 is projected based on recent change
Overall: 50.7 years
Female: 50.7 years
Male: 50.8 years
There are 17,420 adults, (5,538 of whom are seniors) in Dukes County.
Female: 10,808 (51.6%)
Male: 10,125 (48.4%)
The racial composition of Dukes County includes 80.54% White, 3.43% other race, and smaller percentages for Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 16,860 | 80.54% |
| Two or more races | 2,250 | 10.75% |
| Other race | 718 | 3.43% |
| Black or African American | 574 | 2.74% |
| Asian | 309 | 1.48% |
| Native American | 222 | 1.06% |
Dukes County 's average per capita income is $61,739. Household income levels show a median of $125,786. The poverty rate stands at 4.43%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $163,407 | - |
| Families | $154,669 | $255,689 |
| Households | $125,786 | $205,357 |
| Non Families | $69,173 | $96,793 |
Average Income
Median Household Income
Poverty Rate