Ranking of Washington Counties By Population with Celtic Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 2.20K people in Washington with Celtic ancestry. Among all Washington counties, King County had the highest population with Celtic ancestry (625), followed by Pierce County (401), and Snohomish County (278).

The chart and table below shows the top 10 counties with high number of people with Celtic 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 Celtic Ancestry in 2021
King County
Pierce County
Snohomish County
Whatcom County
Thurston County
Spokane County
Clark County
Chelan County
Kitsap County
Skagit County
Ranking of Washington Counties By Population with Celtic Ancestry in 2021
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Rank County Population
1 King County 625
2 Pierce County 401
3 Snohomish County 278
4 Whatcom County 150
5 Thurston County 140
6 Spokane County 133
7 Clark County 95
8 Chelan County 56
9 Kitsap County 48
10 Skagit County 44
11 Cowlitz County 43
12 Mason County 29
13 Douglas County 27
14 Grays Harbor County 25
15 Benton County 20
16 Yakima County 19
17 Jefferson County 17
18 Okanogan County 13
19 Whitman County 12
20 Walla Walla County 10
21 Kittitas County 8
22 San Juan County 5
22 Skamania County 5