Dukes County, Massachusetts Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 13th-largest in Massachusetts
The population of Dukes County, Massachusetts is 20,751 as of the 2023 American Community Survey, making it the 13th-largest county in Massachusetts. The median household income is $102,348, the median home value is $1,104,100, and the median age is 50.4.
The population of Dukes County has grown 27.1% since 2010 (16,573 → 21,061), a +1.73% annualized rate.
20,751
Population
+1.73%
Annual growth
201
People / sq mi
$102,348
Median Income
$1,104,100
Median Home Value
Dukes County covers 103 sq mi of land at 201.1 people per square mile.
About Dukes County, MA
In Dukes County, home values do the distinguishing — a median of $1,104,100. With 20,751 residents, Dukes County is a county in Massachusetts. It ranks #13 among counties in Massachusetts by population.
Income is a real outlier — the median household pulls in $102,348, putting Dukes County near the top of US counties. Very few residents live in poverty — 1.9%, below the national 12.4%. Real estate commands a premium here — a median home value of $1,104,100, with typical rent around $1,371.
Degree attainment is near the top of the range for US counties: 49.0% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Working from home is common here: 18.4% of workers do so, above the national 14.0%, and the average commute runs about 17 minutes each way.
High housing values reframe the income picture in Dukes County — even solid earnings stretch less against home prices and rents at this level.
Dukes County Population History (2010-2024)
The county of Dukes County had a population of 16,573 in 2010 and 21,061 in 2024, a 27.1% growth over 14 years. The peak was 21,112 in 2021. Average annual growth rate: 1.82%.
21,061
Population (2024)
16,573
Population (2010)
21,112
Peak (2021)
1.82%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 16,573 |
| 2011 | 16,706 |
| 2012 | 16,838 |
| 2013 | 17,173 |
| 2014 | 17,312 |
| 2015 | 17,290 |
| 2016 | 17,349 |
| 2017 | 17,422 |
| 2018 | 17,459 |
| 2019 | 17,461 |
| 2020 | 20,580 |
| 2021 | 21,112 |
| 2022 | 21,033 |
| 2023 | 20,879 |
| 2024 | 21,061 |
Race & Ethnicity
| White | 81.7% |
| Black or African American | 3.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Age & Sex
50.4
Median Age
50.7%
Female
49.3%
Male
25.9%
Age 65+
Age Distribution
Children (under 15): 13.7% · Seniors (65+): 25.9%
Income & Poverty
| Median household income | $102,348+$1,007 vs state |
| Mean household income | $176,872 |
| Per-capita income | $71,014 |
| Poverty rate | 1.9%-4.7% vs state |
| Unemployment rate | 4.5% |
| Employment-to-population | 62.1% |
Top Industries by Employment
The largest employment sector in Dukes County is finance & real estate, accounting for 22.5% of workers.
How residents commute
1.6%
Drive alone
6.5%
Carpool
64.6%
Public transit
18.4%
Work from home
16.6 min
Avg commute
Housing
$1,104,100+$578,300 vs state
Median home value
$1,371
Median rent
74.6%
Homeownership rate
17,713
Total housing units
41.6%
Occupied
58.4%
Vacant
25.4%
Renter-occupied
Social & access
95.0%
With health insurance
96.3%
With broadband internet
34.4%
Foreign-born
6.8%
Veterans (18+)
10.9%
With a disability
84.9%
Speak language other than English at home
Education
95.2%
High School+
49.0%
Bachelor's+
Largest cities in Massachusetts
Other counties in Massachusetts
Part of Massachusetts
Metro areas in Massachusetts
County rankings
Frequently Asked Questions
Dukes County, Massachusetts has a population of 20,751 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 13th-largest county in Massachusetts. Population density is 201 people per square mile.
The population of Dukes County has grown 27.1% since 2010 (16,573 → 21,061), a +1.73% annualized rate.
The median household income in Dukes County, Massachusetts is $102,348, with mean (average) household income of $176,872 and per-capita income of $71,014. 1.9% of residents live below the federal poverty level.
In Dukes County, the largest racial and ethnic groups are White (81.7%), Black or African American (3.3%), Hispanic or Latino (1.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Dukes County, Massachusetts is 50.4 years. Residents are 50.7% female and 49.3% male.
The median home value in Dukes County is $1,104,100 and median monthly rent is $1,371. 74.6% of occupied housing units are owner-occupied. The county has 17,713 total housing units, 58.4% of which are vacant.
The largest employment sector in Dukes County, Massachusetts is finance, insurance, and real estate, employing 22.5% of workers. The unemployment rate is 4.5%.
Boston is among the largest cities associated with Dukes County, Massachusetts, with a population of 663,972.
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Statewide data for Massachusetts
Population, race, income, age, and trends across Massachusetts
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.