Data / Rankings / Gini index / Counties in Washington

Counties in Washington by gini index

San Juan County had the highest gini index of 39 counties in 2021, at 53.8 index. Garfield County had the lowest, at 37.2 index. The median was 43.5 index and the figure for Washington was 46 index. Source: the U.S. Census Bureau.

Highest53.8San Juan County
Lowest37.2Garfield County
Median43.539 counties
Washington46History

All counties, 2021

CSVChart (SVG)

San Juan CountySan Juan County: 53.8 index53.8Whitman CountyWhitman County: 53 index53Ferry CountyFerry County: 47.5 index47.5Columbia CountyColumbia County: 47.3 index47.3King CountyKing County: 47.2 index47.2Jefferson CountyJefferson County: 46.9 index46.9Klickitat CountyKlickitat County: 46.4 index46.4Asotin CountyAsotin County: 45.8 index45.8Chelan CountyChelan County: 45.5 index45.5Douglas CountyDouglas County: 45.5 index45.5Walla Walla CountyWalla Walla County: 45 index45Spokane CountySpokane County: 45 index45Kittitas CountyKittitas County: 44.5 index44.5Stevens CountyStevens County: 44.4 index44.4Wahkiakum CountyWahkiakum County: 44.2 index44.2Clallam CountyClallam County: 44 index44Adams CountyAdams County: 43.9 index43.9Cowlitz CountyCowlitz County: 43.9 index43.9Whatcom CountyWhatcom County: 43.8 index43.8Pacific CountyPacific County: 43.5 index43.5Island CountyIsland County: 43.2 index43.2Skagit CountySkagit County: 43.2 index43.2Benton CountyBenton County: 43.1 index43.1Kitsap CountyKitsap County: 43 index43Grays Harbor CountyGrays Harbor County: 43 index43Skamania CountySkamania County: 42.9 index42.9Lewis CountyLewis County: 42.9 index42.9Lincoln CountyLincoln County: 42.8 index42.8Yakima CountyYakima County: 42.2 index42.2Clark CountyClark County: 42.2 index42.2Okanogan CountyOkanogan County: 42.2 index42.2Franklin CountyFranklin County: 42.2 index42.2Grant CountyGrant County: 42.1 index42.1Mason CountyMason County: 41.8 index41.8Pierce CountyPierce County: 41.8 index41.8Pend Oreille CountyPend Oreille County: 41.7 index41.7Snohomish CountySnohomish County: 41.2 index41.2Thurston CountyThurston County: 40.6 index40.6Garfield CountyGarfield County: 37.2 index37.2
index. Source: U.S. Census Bureau. Retrieved 2026-10-10.

Full ranking

RankCounties2021
index
1San Juan County53.8
2Whitman County53
3Ferry County47.5
4Columbia County47.3
5King County47.2
6Jefferson County46.9
7Klickitat County46.4
8Asotin County45.8
9Chelan County45.5
10Douglas County45.5
11Walla Walla County45
12Spokane County45
13Kittitas County44.5
14Stevens County44.4
15Wahkiakum County44.2
16Clallam County44
17Adams County43.9
17Cowlitz County43.9
19Whatcom County43.8
20Pacific County43.5
21Island County43.2
22Skagit County43.2
23Benton County43.1
24Kitsap County43
25Grays Harbor County43
26Skamania County42.9
27Lewis County42.9
28Lincoln County42.8
29Yakima County42.2
30Clark County42.2
30Okanogan County42.2
32Franklin County42.2
33Grant County42.1
34Mason County41.8
35Pierce County41.8
36Pend Oreille County41.7
37Snohomish County41.2
38Thurston County40.6
39Garfield County37.2

Other periods

About this ranking

Income inequality on a 0 to 100 scale, where 0 is perfect equality.

Eurostat, equivalised disposable income after social transfers (EU-SILC), for the EU and its countries. For other countries use gini_index_world_bank, which is measured on a different basis. For the United States, ACS five-year estimate B19083 measures inequality in household money income before taxes. Census publishes a coefficient from 0 to 1; Invokely multiplies it by 100. The displayed year is the final year of the five-year period. Negative household incomes are treated as zero. This differs from the EU-SILC measure based on equivalised disposable income and should not be treated as directly comparable.

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 B19083: Gini index of household income inequality (coefficient multiplied by 100). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b19083.dat. Retrieved 2026-10-10.

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Questions

Which county has the highest gini index?

San Juan County, with 53.8 index in 2021, according to the U.S. Census Bureau.

Which county has the lowest gini index?

Garfield County, with 37.2 index in 2021.

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 B19083: Gini index of household income inequality (coefficient multiplied by 100). Retrieved 2026-10-10.

Gini index: other rankings

Counties in Washington: more rankings