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

Cumberland County had the highest graduate or professional degree, population 25 and over of 16 counties in 2023, at 21%. Somerset County had the lowest, at 5.9%. The median was 11.7% and the figure for Maine was 13.3%. Source: the U.S. Census Bureau.

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Highest21Cumberland County
Lowest5.9Somerset County
Median11.716 counties
Maine13.3History

Map of counties, 2023

Androscoggin County: 7.6 %Aroostook County: 6.9 %Cumberland County: 21 %Franklin County: 10.2 %Hancock County: 14.6 %Kennebec County: 11.8 %Knox County: 14.5 %Lincoln County: 15.9 %Oxford County: 7.8 %Penobscot County: 11.6 %Piscataquis County: 6.1 %Sagadahoc County: 17.1 %Somerset County: 5.9 %Waldo County: 14.8 %Washington County: 8.7 %York County: 12.6 %
  • Under 7.6
  • 7.6 to 10
  • 10 to 13
  • 13 to 15
  • 15 and over
%, 2023. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Cumberland County: 21 %Cumberland County21Sagadahoc County: 17.1 %Sagadahoc County17.1Lincoln County: 15.9 %Lincoln County15.9Waldo County: 14.8 %Waldo County14.8Hancock County: 14.6 %Hancock County14.6Knox County: 14.5 %Knox County14.5York County: 12.6 %York County12.6Kennebec County: 11.8 %Kennebec County11.8Penobscot County: 11.6 %Penobscot County11.6Franklin County: 10.2 %Franklin County10.2Washington County: 8.7 %Washington County8.7Oxford County: 7.8 %Oxford County7.8Androscoggin County: 7.6 %Androscoggin County7.6Aroostook County: 6.9 %Aroostook County6.9Piscataquis County: 6.1 %Piscataquis County6.1Somerset County: 5.9 %Somerset County5.9Cumberland County: 21 %Cumberland County21Sagadahoc County: 17.1 %Sagadahoc County17.1Lincoln County: 15.9 %Lincoln County15.9Waldo County: 14.8 %Waldo County14.8Hancock County: 14.6 %Hancock County14.6Knox County: 14.5 %Knox County14.5York County: 12.6 %York County12.6Kennebec County: 11.8 %Kennebec County11.8Penobscot County: 11.6 %Penobscot County11.6Franklin County: 10.2 %Franklin County10.2Washington County: 8.7 %Washington County8.7Oxford County: 7.8 %Oxford County7.8Androscoggin County: 7.6 %Androscoggin County7.6Aroostook County: 6.9 %Aroostook County6.9Piscataquis County: 6.1 %Piscataquis County6.1Somerset County: 5.9 %Somerset County5.9
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2023 (%)Change on 2022
1Cumberland County21+0.6 pts
2Sagadahoc County17.1+0.8 pts
3Lincoln County15.9+0.5 pts
4Waldo County14.8+1.6 pts
5Hancock County14.6+1.3 pts
6Knox County14.5+0.3 pts
7York County12.6+0.6 pts
8Kennebec County11.8+0.4 pts
9Penobscot County11.6+0.7 pts
10Franklin County10.2+0.2 pts
11Washington County8.7-0.1 pts
12Oxford County7.8+0.8 pts
13Androscoggin County7.6+0.1 pts
14Aroostook County6.9+0.1 pts
15Piscataquis County6.1+0.5 pts
16Somerset County5.9+0.4 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat. Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023. 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, 2023. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023.

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, 2023 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat, via Invokely: https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_maine_by_2023,
  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, 2023}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023. 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/2023/table-based-SF/data/5YRData/acsdt5y2023-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, 2023
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2023/table-based-SF/data/5YRData/acsdt5y2023-b15003.dat
L2  - https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/maine-counties?period=2023.
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/2023/table-based-SF/data/5YRData/acsdt5y2023-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% in 2023, according to the U.S. Census Bureau.

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

Somerset County, with 5.9% in 2023.

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