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

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

Cumberland County had the highest graduate or professional degree, population 25 and over of 16 counties in 2024, at 21.4%. Somerset County had the lowest, at 5.8%. The median was 12.2% and the figure for Maine was 13.7%. Source: the U.S. Census Bureau.

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Highest21.4Cumberland County
Lowest5.8Somerset County
Median12.216 counties
Maine13.7History

Map of counties, 2024

Androscoggin County: 7.3 %Aroostook County: 7.4 %Cumberland County: 21.4 %Franklin County: 12.3 %Hancock County: 15.2 %Kennebec County: 12.2 %Knox County: 15.3 %Lincoln County: 16.3 %Oxford County: 8.1 %Penobscot County: 11.9 %Piscataquis County: 6.2 %Sagadahoc County: 17.9 %Somerset County: 5.8 %Waldo County: 14.4 %Washington County: 9 %York County: 13 %
  • Under 7.4
  • 7.4 to 12
  • 12 to 13
  • 13 to 15
  • 15 and over
%, 2024. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2024

Cumberland County: 21.4 %Cumberland County21.4Sagadahoc County: 17.9 %Sagadahoc County17.9Lincoln County: 16.3 %Lincoln County16.3Knox County: 15.3 %Knox County15.3Hancock County: 15.2 %Hancock County15.2Waldo County: 14.4 %Waldo County14.4York County: 13 %York County13Franklin County: 12.3 %Franklin County12.3Kennebec County: 12.2 %Kennebec County12.2Penobscot County: 11.9 %Penobscot County11.9Washington County: 9 %Washington County9Oxford County: 8.1 %Oxford County8.1Aroostook County: 7.4 %Aroostook County7.4Androscoggin County: 7.3 %Androscoggin County7.3Piscataquis County: 6.2 %Piscataquis County6.2Somerset County: 5.8 %Somerset County5.8Cumberland County: 21.4 %Cumberland County21.4Sagadahoc County: 17.9 %Sagadahoc County17.9Lincoln County: 16.3 %Lincoln County16.3Knox County: 15.3 %Knox County15.3Hancock County: 15.2 %Hancock County15.2Waldo County: 14.4 %Waldo County14.4York County: 13 %York County13Franklin County: 12.3 %Franklin County12.3Kennebec County: 12.2 %Kennebec County12.2Penobscot County: 11.9 %Penobscot County11.9Washington County: 9 %Washington County9Oxford County: 8.1 %Oxford County8.1Aroostook County: 7.4 %Aroostook County7.4Androscoggin County: 7.3 %Androscoggin County7.3Piscataquis County: 6.2 %Piscataquis County6.2Somerset County: 5.8 %Somerset County5.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1Cumberland County21.4+0.4 pts
2Sagadahoc County17.9+0.8 pts
3Lincoln County16.3+0.4 pts
4Knox County15.3+0.7 pts
5Hancock County15.2+0.6 pts
6Waldo County14.4-0.4 pts
7York County13+0.4 pts
8Franklin County12.3+2.1 pts
9Kennebec County12.2+0.4 pts
10Penobscot County11.9+0.3 pts
11Washington County9+0.4 pts
12Oxford County8.1+0.3 pts
13Aroostook County7.4+0.5 pts
14Androscoggin County7.3-0.4 pts
15Piscataquis County6.2+0.1 pts
16Somerset County5.8-0.1 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 Maine 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 Maine 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/maine-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 Maine 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/maine-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 Maine 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/maine-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_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 Maine 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/maine-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 Maine 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/maine-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/maine-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 Maine 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?

Cumberland County, with 21.4% in 2024, according to the U.S. Census Bureau.

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

Somerset County, with 5.8% 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 Maine: more rankings