How Washington Compares

Washington

38.3 years

National

38.9 years

1.5% below

State Ranking

Rank	State	Value
#34	Iowa	38.6 years
#35	Mississippi	38.6 years
#36	Arkansas	38.5 years
#37	Washington	38.3 years
#38	Indiana	38.1 years
#39	Louisiana	38.0 years
#40	South Dakota	38.0 years

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Highest Age Counties in Washington

#	County	Age
1	Jefferson County	59.8 years
2	San Juan County	57.0 years
3	Pacific County	55.0 years
4	Wahkiakum County	54.5 years
5	Ferry County	52.9 years
6	Clallam County	52.1 years
7	Pend Oreille County	49.8 years
8	Columbia County	49.6 years
9	Skamania County	48.5 years
10	Garfield County	47.8 years

Lowest Age Counties in Washington

#	County	Age
39	Whitman County	26.4 years
38	Adams County	29.3 years
37	Franklin County	30.9 years
36	Yakima County	33.3 years
35	Grant County	33.7 years
34	Kittitas County	35.8 years
33	Benton County	36.3 years
32	Pierce County	37.0 years
31	King County	37.4 years
30	Whatcom County	38.4 years

Median Age in Washington

Washington has a median age of 38.3 years, ranking #37 of 52 among all 52 states and territories. This is 1.5% below the national value of 38.9 years.

Across Washington's 39 counties, median age ranges from 26.4 years to 59.8 years. The county with the highest value is Jefferson County at 59.8 years.

The median age of the total population.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.