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Median Age in Washington, by County

Median Age for every county in Washington, ranked. The highest is Jefferson County at 59.8 and the lowest is Whitman County at 26.4.

Washington: 38.3 · United States: 38.9 · median county in Washington: 42.1

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#County Median Age
1Jefferson County59.8
2San Juan County57.0
3Pacific County55.0
4Wahkiakum County54.5
5Ferry County52.9
6Clallam County52.1
7Pend Oreille County49.8
8Columbia County49.6
9Skamania County48.5
10Garfield County47.8
11Lincoln County46.9
12Stevens County46.9
13Klickitat County46.8
14Asotin County46.2
15Island County44.8
16Grays Harbor County44.7
17Mason County44.7
18Okanogan County43.2
19Lewis County42.2
20Skagit County42.1
21Cowlitz County41.5
22Chelan County40.4
23Kitsap County40.2
24Thurston County40.0
25Clark County39.1
26Douglas County38.9
27Snohomish County38.6
28Spokane County38.5
29Walla Walla County38.5
30Whatcom County38.4
31King County37.4
32Pierce County37.0
33Benton County36.3
34Kittitas County35.8
35Grant County33.7
36Yakima County33.3
37Franklin County30.9
38Adams County29.3
39Whitman County26.4

Half of residents are older than this and half are younger.

Source: ACS 2020-2024 5-Year Estimates, 2024.

Washington ranks 37th of 52 states for median age.

Median Age in other states

Other statistics for Washington by county