Washington County Map With Cities
By Marko Visic · Updated Oct 5, 2026
Washington has 39 counties, covering 66,457 square miles of land. The Census Bureau estimates its population at 8,001,020 as of July 1, 2025. The largest county by land area is Okanogan County; the most populous is King County; the least populous is Garfield County.
Tap or click any county for details. Need a printable version? Blank Washington map (PDF/PNG/SVG).
All 39 Washington counties
| County | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| King County | 53033 | 2,344,939 | +3.3% | 2,116 | 1,108 | $124,746 |
| Pierce County | 53053 | 946,288 | +2.7% | 1,668 | 567 | $99,564 |
| Snohomish County | 53061 | 870,656 | +5.2% | 2,087 | 417 | $111,246 |
| Spokane County | 53063 | 558,344 | +3.5% | 1,764 | 316 | $78,582 |
| Clark County | 53011 | 532,119 | +5.7% | 629 | 847 | $97,536 |
| Thurston County | 53067 | 304,261 | +3.2% | 723 | 421 | $96,563 |
| Kitsap County | 53035 | 283,374 | +2.8% | 395 | 717 | $104,158 |
| Yakima County | 53077 | 259,185 | +1.0% | 4,295 | 60 | $70,656 |
| Whatcom County | 53073 | 236,392 | +4.2% | 2,108 | 112 | $81,784 |
| Benton County | 53005 | 221,722 | +7.2% | 1,700 | 130 | $89,874 |
| Skagit County | 53057 | 132,975 | +2.7% | 1,730 | 77 | $89,263 |
| Cowlitz County | 53015 | 114,885 | +3.8% | 1,141 | 101 | $76,531 |
| Grant County | 53025 | 105,727 | +6.6% | 2,680 | 39 | $73,267 |
| Franklin County | 53021 | 102,612 | +6.1% | 1,242 | 83 | $86,714 |
| Lewis County | 53041 | 88,062 | +7.2% | 2,403 | 37 | $74,796 |
| Island County | 53029 | 85,657 | -1.4% | 209 | 410 | $90,551 |
| Chelan County | 53007 | 81,941 | +3.5% | 2,921 | 28 | $82,381 |
| Clallam County | 53009 | 78,202 | +1.4% | 1,739 | 45 | $70,370 |
| Grays Harbor County | 53027 | 78,144 | +3.3% | 1,902 | 41 | $64,414 |
| Mason County | 53045 | 71,165 | +8.3% | 960 | 74 | $83,270 |
| Walla Walla County | 53071 | 62,361 | -0.4% | 1,270 | 49 | $74,202 |
| Stevens County | 53065 | 49,668 | +6.9% | 2,477 | 20 | $69,327 |
| Kittitas County | 53037 | 48,803 | +4.9% | 2,297 | 21 | $73,804 |
| Whitman County | 53075 | 48,512 | +1.1% | 2,159 | 22 | $55,406 |
| Douglas County | 53017 | 46,473 | +8.2% | 1,819 | 26 | $80,363 |
| Okanogan County | 53047 | 45,230 | +7.4% | 5,266 | 9 | $63,207 |
| Jefferson County | 53031 | 33,970 | +3.0% | 1,804 | 19 | $74,048 |
| Pacific County | 53049 | 24,357 | +4.2% | 933 | 26 | $67,081 |
| Klickitat County | 53039 | 24,331 | +7.0% | 1,872 | 13 | $71,042 |
| Asotin County | 53003 | 22,545 | +1.1% | 636 | 35 | $72,283 |
| Adams County | 53001 | 21,488 | +4.3% | 1,925 | 11 | $66,136 |
| San Juan County | 53055 | 18,577 | +4.4% | 174 | 107 | $84,800 |
| Pend Oreille County | 53051 | 14,457 | +7.9% | 1,400 | 10 | $67,436 |
| Skamania County | 53059 | 12,669 | +5.3% | 1,658 | 8 | $93,265 |
| Lincoln County | 53043 | 11,982 | +10.1% | 2,311 | 5 | $71,512 |
| Ferry County | 53019 | 7,517 | +4.7% | 2,203 | 3 | $55,614 |
| Wahkiakum County | 53069 | 4,873 | +10.2% | 263 | 19 | $62,653 |
| Columbia County | 53013 | 4,141 | +4.7% | 869 | 5 | $71,810 |
| Garfield County | 53023 | 2,416 | +5.7% | 711 | 3 | $64,884 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many counties does Washington have?
Washington has 39 counties covering 66,457 square miles. The state was admitted to the Union in 1889 as the 42nd state.
The largest county by land area is Okanogan County at 5,266 square miles, home to 45,230 residents. The most populous is King County with 2,344,939 residents — a density of 1,108 people per square mile. At the other end of the scale, Garfield County has 2,416 residents.
Washington’s capital is Olympia, while the largest city is Seattle.
Related resources
Download a printable outline of Washington’s county boundaries from our blank map of Washington page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Washington county a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Washington address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Washington specifically: the 100-mile radius around Olympia measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Washington ranks the state’s most isolated inhabited place. The county-counts blog post puts Washington’s 39 counties in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.