The U.S. state of Washington has 29 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated six combined statistical areas, 13 metropolitan statistical areas, and ten micropolitan statistical areas in Washington. As of 2025, the largest of these is the Seattle–Tacoma, WA CSA, anchored by Washington's largest city, Seattle and including its capital, Olympia.

The state historically had three metropolitan areas: Seattle, Spokane, and Tacoma. Seattle and Tacoma were eventually merged, while other metropolitan areas were added in the 1970s and 1980s. There are 13 metropolitan areas that include areas in Washington; the largest is Seattle–Tacoma–Bellevue, which includes half of the state's population.

+The 29 United States statistical areas and 39 counties of the State of WashingtonCombined statistical area2025 population (est.)Core-based statistical area2025 population (est.)County2025 population (est.)Metropolitan division2025 population (est.)Seattle–Tacoma, WA CSA5,127,377Seattle–Tacoma–Bellevue, WA MSA4,161,883King County, Washington2,344,939Seattle–Bellevue–Kent, WA MD2,344,939Pierce County, Washington946,288Tacoma–Lakewood, WA MD946,288Snohomish County, Washington870,656Everett, WA MD870,656Olympia–Lacey–Tumwater, WA MSA304,261Thurston County, Washington304,261noneBremerton–Silverdale–Port Orchard, WA MSA283,374Kitsap County, Washington283,374Mount Vernon–Anacortes, WA MSA132,975Skagit County, Washington132,975Centralia, WA μSA88,062Lewis County, Washington88,062Oak Harbor, WA μSA85,657Island County, Washington85,657Shelton, WA μSA71,165Mason County, Washington71,165Portland–Vancouver–Salem, OR-WA CSA3,333,552659,673 ()Portland–Vancouver–Hillsboro, OR-WA MSA2,542,282544,788 (WA)Multnomah County, Oregon795,391Washington County, Oregon611,708Clark County, Washington532,119Clackamas County, Oregon426,280Yamhill County, Oregon110,024Columbia County, Oregon54,091Skamania County, Washington12,669Salem, OR MSA445,814Marion County, Oregon355,777Polk County, Oregon90,037Albany, OR MSA132,843Linn County, Oregon132,843Longview–Kelso, WA MSA114,885Cowlitz County, Washington114,885Corvallis, OR MSA97,728Benton County, Oregon97,728Spokane–Spokane Valley–Coeur d'Alene, WA-ID CSA799,876608,012 (WA)Spokane–Spokane Valley, WA MSA608,012Spokane County, Washington558,344Stevens County, Washington49,668Coeur d'Alene, ID MSA191,864Kootenai County, Idaho191,864Kennewick–Richland–Walla Walla, WA CSA386,695Kennewick–Richland, WA MSA324,334Benton County, Washington221,722Franklin County, Washington102,612Walla Walla, WA MSA62,361Walla Walla County, Washington62,361noneYakima, WA MSA259,185Yakima County, Washington259,185Bellingham, WA MSA236,392Whatcom County, Washington236,392Wenatchee–East Wenatchee, WA MSA128,414Chelan County, Washington81,941Douglas County, Washington46,473Moses Lake–Othello, WA CSA127,215Moses Lake, WA μSA105,727Grant County, Washington105,727Othello, WA μSA21,488Adams County, Washington21,488nonePort Angeles, WA μSA78,202Clallam County, Washington78,202Aberdeen, WA μSA78,144Grays Harbor County, Washington78,144Pullman–Moscow, WA-ID CSA90,35448,512 (WA)Pullman, WA μSA48,512Whitman County, Washington48,512Moscow, ID μSA41,842Latah County, Idaho41,842noneEllensburg, WA μSA48,803Kittitas County, Washington48,803Port Townsend, WA μSA33,970Jefferson County, Washington33,970Lewiston, ID-WA MSA65,45022,545 (WA)Nez Perce County, Idaho42,905Asotin County, Washington22,545noneOkanogan County, Washington45,230Pacific County, Washington24,357Klickitat County, Washington24,331San Juan County, Washington18,577Pend Oreille County, Washington14,457Lincoln County, Washington11,982Ferry County, Washington7,517Wahkiakum County, Washington4,873Columbia County, Washington4,141Garfield County, Washington2,416State of Washington8,001,020

+The 23 core-based statistical areas of the State of Washington2025 rankCore-based statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusSeattle–Tacoma–Bellevue, WA MSASpokane–Spokane Valley, WA MSAPortland–Vancouver–Hillsboro, OR-WA MSA (WA)Kennewick–Richland, WA MSAOlympia–Lacey–Tumwater, WA MSABremerton–Silverdale–Port Orchard, WA MSAYakima, WA MSABellingham, WA MSAMount Vernon–Anacortes, WA MSAWenatchee–East Wenatchee, WA MSALongview–Kelso, WA MSAMoses Lake, WA μSAOak Harbor, WA μSACentralia, WA μSAPort Angeles, WA μSAAberdeen, WA μSAShelton, WA μSAWalla Walla, WA MSAEllensburg, WA μSAPullman, WA μSAPort Townsend, WA μSALewiston, ID-WA MSA (WA)Othello, WA μSAPortland–Vancouver–Hillsboro, OR-WA MSALewiston, ID-WA MSA

+The six combined statistical areas of the State of Washington2025 rankCombined statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusSeattle–Tacoma, WA CSAPortland–Vancouver–Salem, OR-WA CSA (WA)Spokane–Spokane Valley–Coeur d'Alene, WA-ID CSA (WA)Kennewick–Richland–Walla Walla, WA CSAMoses Lake–Othello, WA CSAPullman–Moscow, WA-ID CSA (WA)Portland–Vancouver–Salem, OR-WA CSAPullman–Moscow, WA-ID CSASpokane–Spokane Valley–Coeur d'Alene, WA-ID CSA

See also

Geography of Washington (state) Demographics of Washington (state)

Notes

References

External links

Office of Management and Budget United States Census Bureau