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

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

King County had the highest graduate or professional degree, population 25 and over of 39 counties in 2024, at 24.2%. Adams County had the lowest, at 5.4%. The median was 11.2% and the figure for Washington was 15.6%. Source: the U.S. Census Bureau.

Highest24.2King County
Lowest5.4Adams County
Median11.239 counties
Washington15.6History

All counties, 2024

King County: 24.2 %King County24.2San Juan County: 23.4 %San Juan County23.4Whitman County: 22.4 %Whitman County22.4Jefferson County: 19.6 %Jefferson County19.6Whatcom County: 14.9 %Whatcom County14.9Thurston County: 14.9 %Thurston County14.9Island County: 14.4 %Island County14.4Kitsap County: 14 %Kitsap County14Klickitat County: 14 %Klickitat County14Kittitas County: 13.9 %Kittitas County13.9Walla Walla County: 13.5 %Walla Walla County13.5Snohomish County: 13.4 %Snohomish County13.4Benton County: 12.9 %Benton County12.9Clark County: 12.4 %Clark County12.4Garfield County: 12.4 %Garfield County12.4Clallam County: 12.4 %Clallam County12.4Spokane County: 12.1 %Spokane County12.1Skagit County: 11.8 %Skagit County11.8Pierce County: 11.3 %Pierce County11.3Chelan County: 11.2 %Chelan County11.2Skamania County: 10.6 %Skamania County10.6Columbia County: 9.9 %Columbia County9.9Okanogan County: 9.6 %Okanogan County9.6Asotin County: 9.4 %Asotin County9.4Wahkiakum County: 8.2 %Wahkiakum County8.2Stevens County: 7.9 %Stevens County7.9Lincoln County: 7.8 %Lincoln County7.8Franklin County: 7.8 %Franklin County7.8Pacific County: 7.8 %Pacific County7.8Pend Oreille County: 7.8 %Pend Oreille County7.8Mason County: 7.7 %Mason County7.7Lewis County: 7.3 %Lewis County7.3Yakima County: 7 %Yakima County7Douglas County: 6.2 %Douglas County6.2Ferry County: 6.1 %Ferry County6.1Grays Harbor County: 6 %Grays Harbor County6Cowlitz County: 5.7 %Cowlitz County5.7Grant County: 5.6 %Grant County5.6Adams County: 5.4 %Adams County5.4
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2024 (%)Change on 2023
1King County24.2+0.6 pts
2San Juan County23.4+0.7 pts
3Whitman County22.4-0.7 pts
4Jefferson County19.6-0.1 pts
5Whatcom County14.9+0.3 pts
6Thurston County14.9+0.7 pts
7Island County14.4+0.1 pts
8Kitsap County14+0.8 pts
9Klickitat County14+0.8 pts
10Kittitas County13.9+1.2 pts
11Walla Walla County13.5+0.3 pts
12Snohomish County13.4+0.8 pts
13Benton County12.9-0 pts
14Clark County12.4+0.4 pts
15Garfield County12.4+0.5 pts
16Clallam County12.4-0 pts
17Spokane County12.1+0.5 pts
18Skagit County11.8+0.6 pts
19Pierce County11.3+0.4 pts
20Chelan County11.2+0.5 pts
21Skamania County10.6+0.3 pts
22Columbia County9.9-1.3 pts
23Okanogan County9.6+0.7 pts
24Asotin County9.4-0.1 pts
25Wahkiakum County8.2+1.3 pts
26Stevens County7.9-0.7 pts
27Lincoln County7.8+0.2 pts
28Franklin County7.8+0.1 pts
29Pacific County7.8+0.9 pts
29Pend Oreille County7.8+0.8 pts
31Mason County7.7-0.2 pts
32Lewis County7.3+0.5 pts
33Yakima County7+0.1 pts
34Douglas County6.2-0.4 pts
35Ferry County6.1-1 pts
36Grays Harbor County6-0.1 pts
37Cowlitz County5.7+0.2 pts
38Grant County5.6+0.3 pts
39Adams County5.4+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 Washington 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 Washington 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/washington-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 Washington 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/washington-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 Washington 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/washington-counties (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_washington_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 Washington 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/washington-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 Washington 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/washington-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/washington-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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Questions

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

King County, with 24.2% in 2024, according to the U.S. Census Bureau.

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

Adams County, with 5.4% 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 Washington: more rankings