Ranking of Washington Counties By Percentage of Population with Slovak Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 6.46K people in Washington with Slovak ancestry (0.09% of Washington population). Among all Washington counties, Jefferson County had the highest percentage of its population with Slovak ancestry (0.23%), followed by Whitman County (0.21%), and King County (0.13%).

The chart and table below shows the top 10 counties with high percentage of its population having Slovak 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 Percentage of Population with Slovak Ancestry in 2021
Jefferson County
Whitman County
King County
Thurston County
Benton County
Kitsap County
San Juan County
Cowlitz County
Island County
Pierce County
Ranking of Washington Counties By Percentage of Population with Slovak Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Jefferson County 0.23
2 Whitman County 0.21
3 King County 0.13
4 Thurston County 0.12
5 Benton County 0.10
5 Kitsap County 0.10
6 San Juan County 0.09
7 Cowlitz County 0.08
7 Island County 0.08
7 Pierce County 0.08
8 Clallam County 0.07
8 Kittitas County 0.07
8 Snohomish County 0.07
8 Spokane County 0.07
8 Whatcom County 0.07
9 Clark County 0.06
9 Walla Walla County 0.06
10 Klickitat County 0.05
10 Mason County 0.05
10 Okanogan County 0.05
11 Ferry County 0.04
11 Franklin County 0.04
11 Lewis County 0.04
12 Chelan County 0.02
12 Grays Harbor County 0.02
12 Pacific County 0.02
12 Skagit County 0.02
12 Skamania County 0.02
12 Stevens County 0.02
13 Grant County 0.01
13 Yakima County 0.01