Ranking of Washington Counties By Population with American Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 282.34K people in Washington with American ancestry. Among all Washington counties, King County had the highest population with American ancestry (57.98K), followed by Pierce County (33.85K), and Spokane County (27.01K).

The chart and table below shows the top 10 counties with high number of people with American ancestry.

You can see similar information for other states and for other ancestry groups in Washington.

You may also be interested in:
Ranking of Washington Counties By Percentage of Population with American Ancestry in 2021

Related Topics: Washington ACS-5Yrs Estimates, 2021 Topic List.

Data Source: US Census Bureau.

Ranking of Washington Counties By Population with American Ancestry in 2021

King County

Pierce County

Spokane County

Snohomish County

Clark County

Thurston County

Kitsap County

Benton County

Yakima County

Whatcom County

Ranking of Washington Counties By Population with American Ancestry in 2021

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Rank	County	Population
1	King County	57978
2	Pierce County	33848
3	Spokane County	27007
4	Snohomish County	26053
5	Clark County	21660
6	Thurston County	11578
7	Kitsap County	11065
8	Benton County	9719
9	Yakima County	7947
10	Whatcom County	6592
11	Chelan County	5548
12	Stevens County	5231
13	Cowlitz County	5000
14	Skagit County	4960
15	Grant County	4259
16	Lewis County	4041
17	Island County	3897
18	Okanogan County	3848
19	Walla Walla County	3570
20	Lincoln County	3493
21	Clallam County	3295
22	Mason County	2881
23	Grays Harbor County	2492
24	Franklin County	2449
25	Whitman County	1923
26	Klickitat County	1917
27	Douglas County	1795
28	Kittitas County	1518
29	Jefferson County	1378
30	Skamania County	1237
31	Asotin County	1164
32	Pacific County	704
33	Adams County	622
34	Pend Oreille County	488
35	San Juan County	431
36	Columbia County	269
37	Wahkiakum County	210
38	Ferry County	137
38	Garfield County	137