List of Washington (WA) counties in alphabetical order, seats, size, numbers Skip to main content

List of Washington (WA) counties in alphabetical order, seats, size, numbers

List of Washington (WA) counties in alphabetical order, seats, size, numbers

Find out the list of Washington (WA) counties in alphabetical order, seats, size, and numbers.

Washington has 39 counties. Here is a detailed list in alphabetical order:

A

Adams County, WA

Asotin County, WA 

B

Benton County, WA 

C

Chelan County, WA 

Clallam County, WA 

Clark County, WA 

Columbia County, WA 

Cowlitz County, WA

D

Douglas County, WA 

F

Ferry County, WA 

Franklin County, WA 

G

Garfield County, WA 

Grant County, WA 

Greys Harbour County, WA 

I

Island County, WA 

J

Jefferson County, WA 


K

King County, WA 

Kitsap County, WA 

Kittitas County, WA 

Klickitat County, WA 

L

Lewis County, WA 

Lincoln County, WA 

M

Mason County, WA 

O

Okanogan County, WA 


P

Pacific County, WA 

Pend Oreille County, WA 

Pierce County, WA 


S

San Juan County, WA 

Skagit County, WA 

Skamania County, WA 

Snohomish County, WA 

Spokane County, WA 

Stevens County, WA 


T

Thurston County, WA 


W

Wahkiakum County, WA 

Walla Walla County, WA 

Whatcom County, WA 

Whitman County, WA 


Y

Yakima County, WA 


List of Washington counties in printable and scannable format 

A

Adams County, WA; Asotin County, WA 

B

Benton County, WA 


C

Chelan County, WA; Clallam County, WA; Clark County, WA; Columbia County, WA; Cowlitz County, WA


D

Douglas County, WA 

F

Ferry County, WA, Franklin County, WA 

G

Garfield County, WA; Grant County, WA; Greys Harbour County, WA 


I

Island County, WA 


J

Jefferson County, WA 

K

King County, WA; Kitsap County, WA; Kittitas County, WA; Klickitat County, WA 


L

Lewis County, WA, Lincoln County, WA 

M

Mason County, WA 

O

Okanogan County, WA 

P

Pacific County, WA; Pend Oreille County, WA; Pierce County, WA 

S

San Juan County WA, Skagit County WA, Skamania County WA, Snohomish County WA, Spokane County WA, Stevens County WA 


T

Thurston County, WA 

W

Wahkiakum County, WA; Walla Walla County, WA; Whatcom County, WA; Whitman County, WA 


Y

Yakima County, WA 


List of Washington counties and their county size 

Adams County — 1,925 sq mi

Asotin County — 636 sq mi

Benton County — 1,700 sq mi

Chelan County — 2,921 sq mi

Clallam County — 1,754 sq mi

Clark County — 629 sq mi

Columbia County — 869 sq mi

Cowlitz County — 1,140 sq mi


Douglas County — 1,819 sq mi

Ferry County — 2,203 sq mi

Franklin County — 1,242 sq mi

Garfield County — 711 sq mi

Grant County — 2,680 sq mi

Greys Harbour County — 1,902 sq mi

Island County — 208 sq mi

Jefferson County — 1,804 sq mi

King County — 2,116 sq mi

Kitsap County — 396 sq mi

Kittitas County — 2,297 sq mi

Klickitat County — 1,871 sq mi


Lewis County — 2,403 sq mi

Lincoln County — 2,310 sq mi

Mason County — 1,051 sq mi

Okanogan County — 5,268 sq mi

Pacific County — 933 sq mi

Pend Oreille County — 1,425 sq mi

Pierce County — 1,675 sq mi

San Juan County — 175 sq mi (smallest county)

Skagit County — 1,737 sq mi

Skamania County — 1,656 sq mi

Snohomish County — 2,087 sq mi

Spokane County — 1,764 sq mi

Stevens County — 2,478 sq mi


Thurston County — 774 sq mi

Wahkiakum County — 263 sq mi

Walla Walla County — 1,271 sq mi

Whatcom County — 2,107 sq mi

Whitman County — 2,159 sq mi

Yakima County — 4,295 sq mi


List of Washington counties and their county seats 

Adams County, WA — Ritzville

Asotin County, WA — Asotin

Benton County, WA — Prosser

Chelan County, WA — Wenatchee

Clallam County, WA — Port Angeles

Clark County, WA — Vancouver

Columbia County, WA — Dayton

Cowlitz County, WA — Kelso


Douglas County, WA — Waterville

Ferry County, WA — Republic

Franklin County, WA — Pasco

Garfield County, WA — Pomeroy

Grant County, WA — Ephrata

Greys Harbour County, WA — Montesano

Island County, WA — Coupeville

Jefferson County, WA — Port Townsend

King County, WA — Seattle

Kitsap County, WA — Port Orchard

Kittitas County, WA — Ellensburg

Klickitat County, WA — Goldendale


Lewis County, WA — Chehalis

Lincoln County, WA — Davenport

Mason County, WA — Shelton

Okanogan County, WA — Okanogan

Pacific County, WA — South Bend

Pend Oreille County, WA — Newport

Pierce County, WA — Tacoma


San Juan County, WA — Friday Harbour

Skagit County, WA — Mount Vernon

Skamania County, WA — Stevenson

Snohomish County, WA — Everett

Spokane County, WA — Spokane

Stevens County, WA — Colville

Thurston County, WA — Olympia

Wahkiakum County, WA — Cathlamet

Walla Walla County, WA — Walla Walla

Whatcom County, WA — Bellingham

Whitman County, WA — Colfax

Yakima County, WA — Yakima


Washington counties by region 

Western Washington (Coastal & Puget Sound)

Clallam County, WA 

Jefferson County, WA 

Greys Harbour County, WA 

Pacific County, WA 

Wahkiakum County, WA 

Mason County, WA 

Thurston County, WA 

Pierce County, WA 

King County, WA 

Snohomish County, WA 

Skagit County, WA 

Whatcom County, WA 

San Juan County, WA 

Island County, WA 

Kitsap County, WA 


Central Washington (Cascade Range & Columbia Basin)

Chelan County, WA 

Douglas County, WA 

Kittitas County, WA 

Yakima County, WA 

Klickitat County, WA 

Benton County, WA 

Franklin County, WA 

Grant County, WA 


Eastern Washington (Inland Empire & Palouse)

Adams County, WA 

Asotin County, WA 

Columbia County, WA 

Garfield County, WA 

Whitman County, WA 

Walla Walla County, WA 

Spokane County, WA 

Lincoln County, WA 

Stevens County, WA 

Ferry County, WA 

Pend Oreille County, WA 

Okanogan County, WA 


What is the largest county in Washington?

The largest county in Washington by land area is Okanogan County, which covers 5,268 sq mi.


What is the smallest county in Washington?

The smallest county in Washington is San Juan County, which covers 175 sq. mi.