Richest & Poorest Counties in Washington

Washington has 39 counties. The wealthiest county by median household income is King County at $124,746 , while the lowest-income county is Whitman County at $55,406 . The statewide median household income is $98,141, compared to the national median of $75,149.

Geography

Counties Zip Codes

Metric

Richest Counties in Washington

Top 10 counties ranked by median household income.

# County Income
1 King County $124,746
2 Snohomish County $111,246
3 Kitsap County $104,158
4 Pierce County $99,564
5 Clark County $97,536
6 Thurston County $96,563
7 Skamania County $93,265
8 Island County $90,551
9 Benton County $89,874
10 Skagit County $89,263

Poorest Counties in Washington

Bottom 10 counties ranked by median household income.

# County Income
39 Whitman County $55,406
38 Ferry County $55,614
37 Wahkiakum County $62,653
36 Okanogan County $63,207
35 Grays Harbor County $64,414
34 Garfield County $64,884
33 Adams County $66,136
32 Pacific County $67,081
31 Pend Oreille County $67,436
30 Stevens County $69,327

All 39 Counties Ranked

Every county in Washington ranked by median household income. Click any county for its full profile.

# County Income
1 King County $124,746
2 Snohomish County $111,246
3 Kitsap County $104,158
4 Pierce County $99,564
5 Clark County $97,536
6 Thurston County $96,563
7 Skamania County $93,265
8 Island County $90,551
9 Benton County $89,874
10 Skagit County $89,263
11 Franklin County $86,714
12 San Juan County $84,800
13 Mason County $83,270
14 Chelan County $82,381
15 Whatcom County $81,784
16 Douglas County $80,363
17 Spokane County $78,582
18 Cowlitz County $76,531
19 Lewis County $74,796
20 Walla Walla County $74,202
21 Jefferson County $74,048
22 Kittitas County $73,804
23 Grant County $73,267
24 Asotin County $72,283
25 Columbia County $71,810
26 Lincoln County $71,512
27 Klickitat County $71,042
28 Yakima County $70,656
29 Clallam County $70,370
30 Stevens County $69,327
31 Pend Oreille County $67,436
32 Pacific County $67,081
33 Adams County $66,136
34 Garfield County $64,884
35 Grays Harbor County $64,414
36 Okanogan County $63,207
37 Wahkiakum County $62,653
38 Ferry County $55,614
39 Whitman County $55,406

About This Data

All figures are estimates from the American Community Survey 2024 5-Year Estimates, published by the U.S. Census Bureau. Values are subject to sampling variability and margin of error.

Rankings are within Washington only and may differ from national rankings. For more information, see our methodology.