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Washington: county data, all 39 of them.

Every Washington county has a data page built from federal sources, each figure carrying its publisher and period. What this page does not carry is the Washington statutory framework, and the reason is below rather than hidden.

Counties
39
Population
7,816,116
Land area
66,455 sq mi
Establishments
201,264
Combined county GDP
$856.01 bn
SBA approvals recorded
13,291

Read this first

This is a county directory, not a state guide.

The county pages below are complete. They carry demographics, growth and migration, economic output, employment and wages, business establishments by industry, the construction pipeline, the SBA lending record including charge off rates, geography and hazard. Every figure names its publisher and the period it describes.

What is missing is the Washington legal and regulatory frame: how zoning and land development codes work in this state, what the entitlement path looks like, which agencies permit what, and which statutes override local codes. That material requires a research pack for Washington, and no such pack exists yet.

Why there is no state guide here

You cannot write Washington zoning law from a population table. Everything on the county pages is derived from federal datasets that cover all counties equally; statutory analysis is not, and generating it anyway would produce confident text about the law that nothing behind it supports.

Florida and California have research packs and therefore have full state guides. The remaining eight, including this one, do not. That is stated rather than papered over.

Counties

All 39 Washington county-equivalents.

Washington counties: population, income, establishments and SBA activity
GeographyPopulationMedian incomeEstablishmentsCounty GDPSBA approvalsLand area, sq mi
Adams County20,800$66,136401$1.44 bn411,925
Asotin County22,467$72,283440$984.8 m14636
Benton County212,905$89,8744,960$16.92 bn3571,700
Chelan County80,172$82,3812,782$7.13 bn1392,921
Clallam County77,813$70,3702,114$3.82 bn1041,738
Clark County516,959$97,53612,552$33.42 bn924629
Columbia County4,014$71,810107$498.1 m11869
Cowlitz County112,360$76,5312,309$7.23 bn1221,140
Douglas County44,366$80,363854$2.85 bn461,819
Ferry County7,387$55,614145$278.6 m82,203
Franklin County98,902$86,7141,968$5.78 bn1271,242
Garfield County2,353$64,88439$220.6 m2711
Grant County101,799$73,2672,123$8.58 bn1672,680
Grays Harbor County77,053$64,4141,558$3.83 bn961,902
Island County86,836$90,5511,941$4.66 bn112208
Jefferson County33,577$74,048991$1.87 bn421,804
King County2,287,171$124,74670,376$477.15 bn4,1542,116
Kitsap County277,881$104,1586,272$18.35 bn417395
Kittitas County47,172$73,8041,500$2.64 bn832,297
Klickitat County23,411$71,042585$2.33 bn461,871
Lewis County85,154$74,7961,990$5.12 bn1152,403
Lincoln County11,489$71,512291$685.1 m332,310
Mason County67,982$83,2701,072$2.46 bn76959
Okanogan County43,425$63,2071,202$2.35 bn545,268
Pacific County23,994$67,081558$1.03 bn22933
Pend Oreille County14,050$67,436258$767.7 m201,400
Pierce County930,319$99,56420,051$64.94 bn1,7261,670
San Juan County18,478$84,8001,040$1.23 bn39174
Skagit County131,328$89,2633,670$9.57 bn2851,731
Skamania County12,402$93,265214$432.4 m121,656
Snohomish County844,430$111,24620,258$61.97 bn1,4142,087
Spokane County549,056$78,58214,426$40.04 bn9611,764
Stevens County48,067$69,327943$1.75 bn602,478
Thurston County299,067$96,5636,656$21.56 bn497722
Wahkiakum County4,658$62,65398$132.8 m6263
Walla Walla County62,161$74,2021,491$4.58 bn891,270
Whatcom County230,503$81,7847,146$20.64 bn4522,107
Whitman County47,003$55,406873$3.38 bn662,159
Yakima County257,152$70,6565,010$13.35 bn3524,295

The register

Every source behind these 39 pages.

SourcePeriod coveredLicence
US Census Bureau, American Community Survey 5-Year Estimates2020-2024 5-yearUS Census Bureau, public domain
US Census Bureau, Population Estimates Program, Vintage 2024Vintage 2024, estimates 2020 to 2024US Census Bureau, public domain
US Bureau of Economic Analysis, Regional, table CAGDP2CAGDP2, through 2024US Bureau of Economic Analysis, public domain
US EPA, Map of Radon Zones, county spreadsheet2024-05 publication, EPA 402/A-16/001US EPA, public domain
FEMA OpenFEMA, NFIP Community Status BookCommunity Status Book, as retrievedFEMA OpenFEMA, public domain
US Small Business Administration, 7(a) FOIA releaseFY2020 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Small Business Administration, 504 FOIA releaseFY2010 to FY2026 year to date, as of 2026-06-30FOIA release, public domain
US Census Bureau county boundary geometry, TIGER, adjacency computed from shared boundary verticesTIGER county boundariesUS Census Bureau, public domain
US Census Bureau, County Business Patterns2023US Census Bureau, public domain
US Bureau of Labor Statistics, Quarterly Census of Employment and Wages2024 annual averagesUS BLS, public domain
US Census Bureau, Building Permits Survey2024 annualUS Census Bureau, public domain
US Internal Revenue Service, Statistics of Income county migration flows2021 to 2022 filing yearsIRS SOI, public domain

How a county page is built →