Data / Rankings / Graduate or professional degree, population 25 and over / Counties in Massachusetts

Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024

Middlesex County had the highest graduate or professional degree, population 25 and over of 14 counties in 2024, at 30.5%. Bristol County had the lowest, at 11.4%. The median was 20.3% and the figure for Massachusetts was 21.8%. Source: the U.S. Census Bureau.

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Highest30.5Middlesex County
Lowest11.4Bristol County
Median20.314 counties
Massachusetts21.8History

Map of counties, 2024

Barnstable County: 22.4 %Berkshire County: 18.7 %Bristol County: 11.4 %Dukes County: 24.4 %Essex County: 17.9 %Franklin County: 18.5 %Hampden County: 12.1 %Hampshire County: 27.7 %Middlesex County: 30.5 %Nantucket County: 21.9 %Norfolk County: 28.4 %Plymouth County: 16.1 %Suffolk County: 23.5 %Worcester County: 16.8 %
  • Under 17
  • 17 to 19
  • 19 to 22
  • 22 to 26
  • 26 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Middlesex County: 30.5 %Middlesex County30.5Norfolk County: 28.4 %Norfolk County28.4Hampshire County: 27.7 %Hampshire County27.7Dukes County: 24.4 %Dukes County24.4Suffolk County: 23.5 %Suffolk County23.5Barnstable County: 22.4 %Barnstable County22.4Nantucket County: 21.9 %Nantucket County21.9Berkshire County: 18.7 %Berkshire County18.7Franklin County: 18.5 %Franklin County18.5Essex County: 17.9 %Essex County17.9Worcester County: 16.8 %Worcester County16.8Plymouth County: 16.1 %Plymouth County16.1Hampden County: 12.1 %Hampden County12.1Bristol County: 11.4 %Bristol County11.4Middlesex County: 30.5 %Middlesex County30.5Norfolk County: 28.4 %Norfolk County28.4Hampshire County: 27.7 %Hampshire County27.7Dukes County: 24.4 %Dukes County24.4Suffolk County: 23.5 %Suffolk County23.5Barnstable County: 22.4 %Barnstable County22.4Nantucket County: 21.9 %Nantucket County21.9Berkshire County: 18.7 %Berkshire County18.7Franklin County: 18.5 %Franklin County18.5Essex County: 17.9 %Essex County17.9Worcester County: 16.8 %Worcester County16.8Plymouth County: 16.1 %Plymouth County16.1Hampden County: 12.1 %Hampden County12.1Bristol County: 11.4 %Bristol County11.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Middlesex County30.5+0.3 pts
2Norfolk County28.4+0.7 pts
3Hampshire County27.7+1.1 pts
4Dukes County24.4+1.6 pts
5Suffolk County23.5+0.5 pts
6Barnstable County22.4+0.8 pts
7Nantucket County21.9+0.7 pts
8Berkshire County18.7+0.8 pts
9Franklin County18.5-0.4 pts
10Essex County17.9+0.4 pts
11Worcester County16.8+0.3 pts
12Plymouth County16.1+0.5 pts
13Hampden County12.1+0.1 pts
14Bristol County11.4+0.3 pts

Other periods

About this ranking

People aged 25 and over whose highest degree is a master's, professional school or doctorate degree, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A subset of bachelors_degree_share, which also counts people whose highest degree is a bachelor's.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat, via Invokely: https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_massachusetts_by_2024,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Massachusetts by graduate or professional degree, population 25 and over, 2024
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat
L2  - https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/massachusetts-counties.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b15003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Massachusetts by graduate or professional degree, population 25 and over using official data, and cite the source.
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Questions

Which county has the highest graduate or professional degree, population 25 and over?

Middlesex County, with 30.5% in 2024, according to the U.S. Census Bureau.

Which county has the lowest graduate or professional degree, population 25 and over?

Bristol County, with 11.4% in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

Graduate or professional degree, population 25 and over: other rankings

Counties in Massachusetts: more rankings