| Rank |
County |
Percentage of Seniors |
| 1 |
Jefferson County, Washington
|
29.1%
|
| 2 |
Wahkiakum County, Washington
|
28.1%
|
| 3 |
Pacific County, Washington
|
26.4%
|
| 4 |
San Juan County, Washington
|
26.3%
|
| 5 |
Clallam County, Washington
|
25.4%
|
| 6 |
Columbia County, Washington
|
24.8%
|
| 7 |
Garfield County, Washington
|
23.1%
|
| 8 |
Lincoln County, Washington
|
22.3%
|
| 9 |
Pend Oreille County, Washington
|
21.2%
|
| 10 |
Island County, Washington
|
20.3%
|
| 11 |
Ferry County, Washington
|
20.3%
|
| 12 |
Asotin County, Washington
|
20.0%
|
| 13 |
Mason County, Washington
|
19.9%
|
| 14 |
Klickitat County, Washington
|
19.3%
|
| 15 |
Stevens County, Washington
|
19.0%
|
| 16 |
Okanogan County, Washington
|
18.5%
|
| 17 |
Lewis County, Washington
|
18.4%
|
| 18 |
Grays Harbor County, Washington
|
17.6%
|
| 19 |
Skagit County, Washington
|
17.4%
|
| 20 |
Cowlitz County, Washington
|
16.9%
|
| 21 |
Chelan County, Washington
|
16.4%
|
| 22 |
Skamania County, Washington
|
15.9%
|
| 23 |
Walla Walla County, Washington
|
15.6%
|
| 24 |
Douglas County, Washington
|
14.9%
|
| 25 |
Kitsap County, Washington
|
14.5%
|
| 26 |
Whatcom County, Washington
|
14.4%
|
| 27 |
Thurston County, Washington
|
14.0%
|
| 28 |
Kittitas County, Washington
|
13.9%
|
| 29 |
Spokane County, Washington
|
13.8%
|
| 30 |
Clark County, Washington
|
12.6%
|
| 31 |
Benton County, Washington
|
12.4%
|
| 32 |
Yakima County, Washington
|
12.1%
|
| 33 |
Grant County, Washington
|
12.1%
|
| 34 |
Pierce County, Washington
|
11.8%
|
| 35 |
King County, Washington
|
11.6%
|
| 36 |
Snohomish County, Washington
|
11.3%
|
| 37 |
Adams County, Washington
|
10.2%
|
| 38 |
Whitman County, Washington
|
9.6%
|
| 39 |
Franklin County, Washington
|
7.4%
|