Ranking of Washington Counties By Population with Welsh Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 68.14K people in Washington with Welsh ancestry. Among all Washington counties, King County had the highest population with Welsh ancestry (19.07K), followed by Snohomish County (7.41K), and Pierce County (6.79K).

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

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

Data Source: US Census Bureau.
Ranking of Washington Counties By Population with Welsh Ancestry in 2021
King County
Snohomish County
Pierce County
Spokane County
Clark County
Kitsap County
Benton County
Thurston County
Whatcom County
Skagit County
Ranking of Washington Counties By Population with Welsh Ancestry in 2021
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Rank County Population
1 King County 19066
2 Snohomish County 7412
3 Pierce County 6788
4 Spokane County 5827
5 Clark County 4462
6 Kitsap County 3130
7 Benton County 2417
8 Thurston County 2309
9 Whatcom County 2087
10 Skagit County 1638
11 Lewis County 1245
12 Clallam County 1099
13 Island County 964
14 Kittitas County 791
15 Walla Walla County 782
16 Yakima County 737
17 Cowlitz County 679
18 Douglas County 653
19 Mason County 633
20 Chelan County 620
21 Grays Harbor County 580
22 Franklin County 528
23 Grant County 469
24 Whitman County 437
25 Klickitat County 418
26 Stevens County 407
27 Jefferson County 391
28 Okanogan County 387
29 San Juan County 270
30 Pacific County 223
31 Pend Oreille County 204
32 Wahkiakum County 148
33 Asotin County 114
34 Skamania County 109
35 Lincoln County 53
36 Adams County 33
37 Ferry County 21
38 Columbia County 11