| Name | Dukes County |
| State | Massachusetts |
| FIPS Code | 25007 |
| County Seat | Edgartown |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 20,879 |
| Population Growth Rate(2020-2024) | 1.38% |
| Majority Ethnicity | White 90.13% |
| Public School Majority Ethnicity | White 62% |
| Partisan Voting Index | Strongly Democratic:+26 |
| Unemployment Rate (May 2026) | 8.6% |
| Sales Tax Rate (2025) | 6.25% |
| Area Code(s) | 508 / 774 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 90.13% |
| African American | 3.67% |
| Hispanic | 3.41% |
| Asian | 1.53% |
| Native American | 1.26% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 61.96% |
| African American | 3.74% |
| Hispanic | 26.19% |
| Asian | 0.73% |
| Native American | 2.11% |
| Hawaiin/Pacific Islander | 0% |