Rankings · Counties

Deadliest counties in Washington

Counties in Washington ranked by traffic deaths across 2020–2024, and by their average yearly death rate. Counties with more residents and more road miles tend to have more deaths, so the rate is the fairer comparison.

Most traffic deaths, 2020–2024

# County Deaths 2020–2024 Per 100,000 a year
1 King County 718 6.3
2 Pierce County 476 10.2
3 Spokane County 265 9.7
4 Snohomish County 253 6.0
5 Yakima County 236 18.3
6 Clark County 192 7.4
7 Grant County 123 24.2
8 Thurston County 121 8.1
9 Benton County 103 9.7
10 Kitsap County 91 6.6
11 Skagit County 81 12.4
12 Mason County 80 23.5
13 Whatcom County 75 6.5
14 Cowlitz County 73 13.0
15 Grays Harbor County 54 14.0
16 Lewis County 53 12.4
17 Kittitas County 50 21.2
18 Franklin County 43 8.7
19 Chelan County 42 10.5
20 Okanogan County 39 18.0
21 Island County 37 8.5
22 Clallam County 36 9.3
23 Adams County 35 33.5
24 Stevens County 35 14.5
25 Douglas County 28 12.6
26 Walla Walla County 28 9.0
27 Jefferson County 27 16.1
28 Skamania County 19 n/a
29 Klickitat County 18 n/a
30 Lincoln County 18 n/a
31 Whitman County 17 n/a
32 Pacific County 16 n/a
33 Pend Oreille County 14 n/a
34 Ferry County 13 n/a
35 San Juan County 7 n/a
36 Asotin County 7 n/a
37 Garfield County 4 n/a
38 Wahkiakum County 2 n/a
39 Columbia County 1 n/a

Highest death rates, 2020–2024

Deaths per 100,000 residents a year, averaged over 2020–2024. Only counties with at least 20 deaths in that time are ranked, because rates based on fewer deaths swing too much from year to year to compare. The rate divides deaths by the people who live in a county, so small counties crossed by busy highways can rank high: many of the people who die there are travelling through. How rates are worked out

# County Deaths 2020–2024 Per 100,000 a year
1 Adams County 35 33.5
2 Grant County 123 24.2
3 Mason County 80 23.5
4 Kittitas County 50 21.2
5 Yakima County 236 18.3
6 Okanogan County 39 18.0
7 Jefferson County 27 16.1
8 Stevens County 35 14.5
9 Grays Harbor County 54 14.0
10 Cowlitz County 73 13.0
11 Douglas County 28 12.6
12 Lewis County 53 12.4
13 Skagit County 81 12.4
14 Chelan County 42 10.5
15 Pierce County 476 10.2
16 Benton County 103 9.7
17 Spokane County 265 9.7
18 Clallam County 36 9.3
19 Walla Walla County 28 9.0
20 Franklin County 43 8.7
21 Island County 37 8.5
22 Thurston County 121 8.1
23 Clark County 192 7.4
24 Kitsap County 91 6.6
25 Whatcom County 75 6.5
26 King County 718 6.3
27 Snohomish County 253 6.0

Deadliest counties in the US · Deadliest roads in Washington