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RANKING · 2020 CENSUS · 39 SHOWN OF 39

Highest Scotch-Irish population share, Washington counties · 2020

Washington counties ranked by the share of all residents who are Scotch-Irish ancestry (2020 American Community Survey). A concentration measure: Scotch-Irish residents as a percentage of total population. This list covers the 39 counties in Washington that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →
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RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Scotch-Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2010
01San Juan County, WAWA18,5771.9%−1.2 pts
02Mason County, WAWA71,1651.9%−0.9 pts
03Klickitat County, WAWA24,3311.8%−1.2 pts
04Ferry County, WAWA7,5171.8%−1.8 pts
05Wahkiakum County, WAWA4,8731.8%−1.3 pts
06Jefferson County, WAWA33,9701.5%−2.9 pts
07Kitsap County, WAWA283,3741.5%−1.7 pts
08Columbia County, WAWA4,1411.5%−1.3 pts
09Pacific County, WAWA24,3571.5%−1.6 pts
10Skagit County, WAWA132,9751.4%−0.8 pts
11Stevens County, WAWA49,6681.4%−1.5 pts
12Clallam County, WAWA78,2021.4%−1.9 pts
13Walla Walla County, WAWA62,3611.4%−0.8 pts
14Pend Oreille County, WAWA14,4571.4%−1.4 pts
15Spokane County, WAWA558,3441.3%−1.3 pts
16Whatcom County, WAWA236,3921.3%−1.6 pts
17Island County, WAWA85,6571.3%−1.2 pts
18Clark County, WAWA532,1191.3%−1.5 pts
19Snohomish County, WAWA870,6561.2%−1.4 pts
20Lewis County, WAWA88,0621.2%−2.0 pts
21Thurston County, WAWA304,2611.2%−1.5 pts
22Garfield County, WAWA2,4161.2%−2.1 pts
23Okanogan County, WAWA45,2301.1%−2.0 pts
24Benton County, WAWA221,7221.1%−0.7 pts
25Chelan County, WAWA81,9411.1%−0.9 pts
26Kittitas County, WAWA48,8031.1%−1.7 pts
27Cowlitz County, WAWA114,8851.1%−1.9 pts
28King County, WAWA2,344,9391.1%−1.2 pts
29Grays Harbor County, WAWA78,1441.0%−1.6 pts
30Pierce County, WAWA946,2880.9%−1.5 pts
31Whitman County, WAWA48,5120.8%−1.7 pts
32Yakima County, WAWA259,1850.7%−0.6 pts
33Lincoln County, WAWA11,9820.7%−4.6 pts
34Skamania County, WAWA12,6690.6%−1.5 pts
35Grant County, WAWA105,7270.6%−1.3 pts
36Douglas County, WAWA46,4730.6%−2.3 pts
37Adams County, WAWA21,4880.6%−0.4 pts
38Asotin County, WAWA22,5450.5%−1.7 pts
39Franklin County, WAWA102,6120.4%−1.0 pts
SHOWING 1–39 OF 39
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS