The organization of counties is addressed in the Washington State Constitution’s Article XI. As per the state constitution, a new county must have a population of at least 2,000 people. A petition is required for altering a county area from a majority of registered voters. While the state capital (Olympia) is located within Thurston County, the largest city (Seattle) is located in King county.
How Many Counties in Washington
The US State of Washington (situated in the Western United States’ Pacific Northwest region) has 39 counties. Check this Washington County Map which provides the location of all counties on the Washington Map.
Counties of Washington
- Adams County Map, Washington
- Asotin County Map, Washington
- Benton County Map, Washington
- Chelan County Map, Washington
- Clallam County Map, Washington
- Clark County Map, Washington
- Columbia County Map, Washington
- Cowlitz County Map, Washington
- Douglas County Map, Washington
- Ferry County Map, Washington
- Franklin County Map, Washington
- Garfield County Map, Washington
- Grant County Map, Washington
- Grays Harbor County Map, Washington
- Island County Map, Washington
- Jefferson County Map, Washington
- King County Map, Washington
- Kitsap County Map, Washington
- Kittitas County Map, Washington
- Klickitat County Map, Washington
- Lewis County Map, Washington
- Lincoln County Map, Washington
- Mason County Map, Washington
- Okanogan County Map, Washington
- Pacific County Map, Washington
- Pend Oreille County Map, Washington
- Pierce County Map, Washington
- San Juan County Map, Washington
- Skagit County Map, Washington
- Skamania County Map, Washington
- Snohomish County Map, Washington
- Spokane County Map, Washington
- Stevens County Map, Washington
- Thurston County Map, Washington
- Wahkiakum County Map, Washington
- Walla Walla County Map, Washington
- Whatcom County Map, Washington
- Whitman County Map, Washington
- Yakima County Map, Washington
What are the 5 Biggest Counties in Washington by Size?
The biggest counties in Washington are Okanogan County, Yakima County, Chelan County, Grant County, and Stevens County.
What are the 5 Biggest Counties in Washington by Population?
In terms of population (2020), the biggest counties in Washington are King County, Pierce County, Snohomish County, Spokane County, and Clark County.
Which is the Smallest County in Washington?
The smallest county in Washington (in terms of population) is Garfield County. San Juan County is the smallest county in terms of size.
What are the Oldest and Newest Counties in Washington?
Clark County and Lewis County are the oldest counties in Washington, created in 1845. Pend Oreille County is the newest county, created in 1911.
Which are the Richest and Poorest Counties in Washington?
- King County is the richest county in Washington. Its median annual household income (2019) is US$94,974.
- Ferry County is the poorest county in Washington. Its median annual household income (2019) is US$41,939.
What are the top 5 Best Counties to Live in Washington?
Island County, San Juan County, Kitsap County, King County, and Clark County are Washington’s best counties to live in.