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.
Dukes County, MA Climate
Dukes County, MA has an average annual temperature of 10.1°C (50°F) and receives about 1180 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.1°C
Avg Temp
1180
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 30° | 103 mm |
| February | 0° / 31° | 96 mm |
| March | 3° / 38° | 105 mm |
| April | 8° / 46° | 105 mm |
| May | 13° / 55° | 96 mm |
| June | 18° / 64° | 86 mm |
| July | 21° / 70° | 76 mm |
| August | 21° / 70° | 97 mm |
| September | 17° / 63° | 93 mm |
| October | 12° / 54° | 95 mm |
| November | 7° / 45° | 115 mm |
| December | 2° / 36° | 113 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Dukes County, MA
The most comfortable months to visit Dukes County, MA are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 26°C high). The coldest is January (near -5°C low). November is usually the wettest month.
Where to stay near Dukes County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.