Counties in Washington by high school graduate or higher, population 25 and over

Jefferson County had the highest high school graduate or higher, population 25 and over of 39 counties in 2022, at 97.1%. Adams County had the lowest, at 71%. The median was 92.1% and the figure for Washington was 92.1%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest97.1Jefferson County
Lowest71Adams County
Median92.139 counties
Washington92.1History

Map of counties, 2022

Adams County: 71 %Asotin County: 93 %Benton County: 90.1 %Chelan County: 85.4 %Clallam County: 93 %Clark County: 93 %Columbia County: 89.9 %Cowlitz County: 90.1 %Douglas County: 81.8 %Ferry County: 91.4 %Franklin County: 75.9 %Garfield County: 92.9 %Grant County: 80.4 %Grays Harbor County: 90.1 %Island County: 95.7 %Jefferson County: 97.1 %King County: 93.8 %Kitsap County: 95.2 %Kittitas County: 93.1 %Klickitat County: 89.4 %Lewis County: 89.5 %Lincoln County: 92.5 %Mason County: 90.5 %Okanogan County: 86 %Pacific County: 91.3 %Pend Oreille County: 93.4 %Pierce County: 92.4 %San Juan County: 95.8 %Skagit County: 90.8 %Skamania County: 93.4 %Snohomish County: 92.8 %Spokane County: 94.1 %Stevens County: 92 %Thurston County: 94.3 %Wahkiakum County: 92.1 %Walla Walla County: 88.9 %Whatcom County: 93.3 %Whitman County: 95.8 %Yakima County: 75.7 %
  • Under 87
  • 87 to 90
  • 90 to 92
  • 92 to 93
  • 93 to 94
  • 94 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Jefferson County: 97.1 %Jefferson County97.1Whitman County: 95.8 %Whitman County95.8San Juan County: 95.8 %San Juan County95.8Island County: 95.7 %Island County95.7Kitsap County: 95.2 %Kitsap County95.2Thurston County: 94.3 %Thurston County94.3Spokane County: 94.1 %Spokane County94.1King County: 93.8 %King County93.8Pend Oreille County: 93.4 %Pend Oreille County93.4Skamania County: 93.4 %Skamania County93.4Whatcom County: 93.3 %Whatcom County93.3Kittitas County: 93.1 %Kittitas County93.1Asotin County: 93 %Asotin County93Clark County: 93 %Clark County93Clallam County: 93 %Clallam County93Garfield County: 92.9 %Garfield County92.9Snohomish County: 92.8 %Snohomish County92.8Lincoln County: 92.5 %Lincoln County92.5Pierce County: 92.4 %Pierce County92.4Wahkiakum County: 92.1 %Wahkiakum County92.1Stevens County: 92 %Stevens County92Ferry County: 91.4 %Ferry County91.4Pacific County: 91.3 %Pacific County91.3Skagit County: 90.8 %Skagit County90.8Mason County: 90.5 %Mason County90.5Benton County: 90.1 %Benton County90.1Cowlitz County: 90.1 %Cowlitz County90.1Grays Harbor County: 90.1 %Grays Harbor County90.1Columbia County: 89.9 %Columbia County89.9Lewis County: 89.5 %Lewis County89.5Klickitat County: 89.4 %Klickitat County89.4Walla Walla County: 88.9 %Walla Walla County88.9Okanogan County: 86 %Okanogan County86Chelan County: 85.4 %Chelan County85.4Douglas County: 81.8 %Douglas County81.8Grant County: 80.4 %Grant County80.4Franklin County: 75.9 %Franklin County75.9Yakima County: 75.7 %Yakima County75.7Adams County: 71 %Adams County71Jefferson County: 97.1 %Jefferson County97.1Whitman County: 95.8 %Whitman County95.8San Juan County: 95.8 %San Juan County95.8Island County: 95.7 %Island County95.7Kitsap County: 95.2 %Kitsap County95.2Thurston County: 94.3 %Thurston County94.3Spokane County: 94.1 %Spokane County94.1King County: 93.8 %King County93.8Pend Oreille County: 93.4 %Pend Oreille County93.4Skamania County: 93.4 %Skamania County93.4Whatcom County: 93.3 %Whatcom County93.3Kittitas County: 93.1 %Kittitas County93.1Asotin County: 93 %Asotin County93Clark County: 93 %Clark County93Clallam County: 93 %Clallam County93Garfield County: 92.9 %Garfield County92.9Snohomish County: 92.8 %Snohomish County92.8Lincoln County: 92.5 %Lincoln County92.5Pierce County: 92.4 %Pierce County92.4Wahkiakum County: 92.1 %Wahkiakum County92.1Stevens County: 92 %Stevens County92Ferry County: 91.4 %Ferry County91.4Pacific County: 91.3 %Pacific County91.3Skagit County: 90.8 %Skagit County90.8Mason County: 90.5 %Mason County90.5Benton County: 90.1 %Benton County90.1Cowlitz County: 90.1 %Cowlitz County90.1Grays Harbor County: 90.1 %Grays Harbor County90.1Columbia County: 89.9 %Columbia County89.9Lewis County: 89.5 %Lewis County89.5Klickitat County: 89.4 %Klickitat County89.4Walla Walla County: 88.9 %Walla Walla County88.9Okanogan County: 86 %Okanogan County86Chelan County: 85.4 %Chelan County85.4Douglas County: 81.8 %Douglas County81.8Grant County: 80.4 %Grant County80.4Franklin County: 75.9 %Franklin County75.9Yakima County: 75.7 %Yakima County75.7Adams County: 71 %Adams County71
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Jefferson County97.1+0.9 pts
2Whitman County95.8+0.5 pts
3San Juan County95.8+0.1 pts
4Island County95.7+0.2 pts
5Kitsap County95.20 pts
6Thurston County94.3+0.1 pts
7Spokane County94.1-0 pts
8King County93.8+0.1 pts
9Pend Oreille County93.4+0.7 pts
10Skamania County93.4+0.6 pts
11Whatcom County93.3+0.1 pts
12Kittitas County93.1+0.8 pts
13Asotin County93+1.5 pts
14Clark County93-0.1 pts
15Clallam County93+0.1 pts
16Garfield County92.9-1.1 pts
17Snohomish County92.8-0.1 pts
18Lincoln County92.5+0.2 pts
19Pierce County92.4+0.3 pts
20Wahkiakum County92.1-0.7 pts
21Stevens County92-0.3 pts
22Ferry County91.4+1.2 pts
23Pacific County91.3+1 pts
24Skagit County90.8-0.3 pts
25Mason County90.5+0.1 pts
26Benton County90.1-0.2 pts
27Cowlitz County90.1+0.1 pts
28Grays Harbor County90.1-0.1 pts
29Columbia County89.9-1.2 pts
30Lewis County89.5+0.2 pts
31Klickitat County89.4-1.1 pts
32Walla Walla County88.9+0.6 pts
33Okanogan County86+1.1 pts
34Chelan County85.4+0.7 pts
35Douglas County81.8-0.3 pts
36Grant County80.4+0.2 pts
37Franklin County75.9-0.1 pts
38Yakima County75.7+1.9 pts
39Adams County71+2.5 pts

Other periods

About this ranking

People aged 25 and over who hold a regular high school diploma, a GED or alternative credential, or any higher level of education, 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.

Measures the adult population, not students: it is not the high school graduation rate of a class. Not comparable with the EU share below upper secondary education, which covers ages 25 to 64.

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 high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Washington by high school graduate or higher, population 25 and over, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Washington by high school graduate or higher, population 25 and over, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022. 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 high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Washington by high school graduate or higher, population 25 and over, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Washington by high school graduate or higher, population 25 and over, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat, via Invokely: https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_washington_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Washington by high school graduate or higher, population 25 and over, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-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 high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Washington by high school graduate or higher, population 25 and over, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat
L2  - https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/high-school-graduate-or-higher/washington-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Retrieved 2026-10-12.
ER  - 
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Rank Counties in Washington by high school graduate or higher, population 25 and over using official data, and cite the source.
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Questions

Which county has the highest high school graduate or higher, population 25 and over?

Jefferson County, with 97.1% in 2022, according to the U.S. Census Bureau.

Which county has the lowest high school graduate or higher, population 25 and over?

Adams County, with 71% in 2022.

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 high school diploma, GED or higher as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

High school graduate or higher, population 25 and over: other rankings

Counties in Washington: more rankings