Data / Rankings / Households / Counties in Washington

Counties in Washington by households

King County had the highest households of 39 counties in 2021, at 902,308. Garfield County had the lowest, at 1,004. The median was 25,085 and the figure for Washington was 2.93 million. Source: the U.S. Census Bureau.

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Highest902,308King County
Lowest1,004Garfield County
Median25,08539 counties
Washington2,931,841History

Map of counties, 2021

Adams County: 6,158 countAsotin County: 9,287 countBenton County: 74,290 countChelan County: 29,474 countClallam County: 33,636 countClark County: 184,173 countColumbia County: 1,849 countCowlitz County: 42,776 countDouglas County: 15,278 countFerry County: 2,934 countFranklin County: 27,721 countGarfield County: 1,004 countGrant County: 32,803 countGrays Harbor County: 29,319 countIsland County: 35,102 countJefferson County: 15,497 countKing County: 902,308 countKitsap County: 104,977 countKittitas County: 18,772 countKlickitat County: 9,332 countLewis County: 31,223 countLincoln County: 4,440 countMason County: 25,085 countOkanogan County: 16,630 countPacific County: 9,878 countPend Oreille County: 5,653 countPierce County: 335,969 countSan Juan County: 8,378 countSkagit County: 50,540 countSkamania County: 4,723 countSnohomish County: 302,970 countSpokane County: 209,640 countStevens County: 18,222 countThurston County: 114,556 countWahkiakum County: 1,891 countWalla Walla County: 22,842 countWhatcom County: 89,865 countWhitman County: 18,010 countYakima County: 84,636 count
  • Under 6,000
  • 6,000 to 15K
  • 15K to 25K
  • 25K to 34K
  • 34K to 100K
  • 100K and over
count, 2021. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

King County: 902,308 countKing County902,308Pierce County: 335,969 countPierce County335,969Snohomish County: 302,970 countSnohomish County302,970Spokane County: 209,640 countSpokane County209,640Clark County: 184,173 countClark County184,173Thurston County: 114,556 countThurston County114,556Kitsap County: 104,977 countKitsap County104,977Whatcom County: 89,865 countWhatcom County89,865Yakima County: 84,636 countYakima County84,636Benton County: 74,290 countBenton County74,290Skagit County: 50,540 countSkagit County50,540Cowlitz County: 42,776 countCowlitz County42,776Island County: 35,102 countIsland County35,102Clallam County: 33,636 countClallam County33,636Grant County: 32,803 countGrant County32,803Lewis County: 31,223 countLewis County31,223Chelan County: 29,474 countChelan County29,474Grays Harbor County: 29,319 countGrays Harbor County29,319Franklin County: 27,721 countFranklin County27,721Mason County: 25,085 countMason County25,085Walla Walla County: 22,842 countWalla Walla County22,842Kittitas County: 18,772 countKittitas County18,772Stevens County: 18,222 countStevens County18,222Whitman County: 18,010 countWhitman County18,010Okanogan County: 16,630 countOkanogan County16,630Jefferson County: 15,497 countJefferson County15,497Douglas County: 15,278 countDouglas County15,278Pacific County: 9,878 countPacific County9,878Klickitat County: 9,332 countKlickitat County9,332Asotin County: 9,287 countAsotin County9,287San Juan County: 8,378 countSan Juan County8,378Adams County: 6,158 countAdams County6,158Pend Oreille County: 5,653 countPend Oreille County5,653Skamania County: 4,723 countSkamania County4,723Lincoln County: 4,440 countLincoln County4,440Ferry County: 2,934 countFerry County2,934Wahkiakum County: 1,891 countWahkiakum County1,891Columbia County: 1,849 countColumbia County1,849Garfield County: 1,004 countGarfield County1,004King County: 902,308 countKing County902,308Pierce County: 335,969 countPierce County335,969Snohomish County: 302,970 countSnohomish County302,970Spokane County: 209,640 countSpokane County209,640Clark County: 184,173 countClark County184,173Thurston County: 114,556 countThurston County114,556Kitsap County: 104,977 countKitsap County104,977Whatcom County: 89,865 countWhatcom County89,865Yakima County: 84,636 countYakima County84,636Benton County: 74,290 countBenton County74,290Skagit County: 50,540 countSkagit County50,540Cowlitz County: 42,776 countCowlitz County42,776Island County: 35,102 countIsland County35,102Clallam County: 33,636 countClallam County33,636Grant County: 32,803 countGrant County32,803Lewis County: 31,223 countLewis County31,223Chelan County: 29,474 countChelan County29,474Grays Harbor County: 29,319 countGrays Harbor County29,319Franklin County: 27,721 countFranklin County27,721Mason County: 25,085 countMason County25,085Walla Walla County: 22,842 countWalla Walla County22,842Kittitas County: 18,772 countKittitas County18,772Stevens County: 18,222 countStevens County18,222Whitman County: 18,010 countWhitman County18,010Okanogan County: 16,630 countOkanogan County16,630Jefferson County: 15,497 countJefferson County15,497Douglas County: 15,278 countDouglas County15,278Pacific County: 9,878 countPacific County9,878Klickitat County: 9,332 countKlickitat County9,332Asotin County: 9,287 countAsotin County9,287San Juan County: 8,378 countSan Juan County8,378Adams County: 6,158 countAdams County6,158Pend Oreille County: 5,653 countPend Oreille County5,653Skamania County: 4,723 countSkamania County4,723Lincoln County: 4,440 countLincoln County4,440Ferry County: 2,934 countFerry County2,934Wahkiakum County: 1,891 countWahkiakum County1,891Columbia County: 1,849 countColumbia County1,849Garfield County: 1,004 countGarfield County1,004
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Full ranking

RankCounties2021
count
1King County902,308
2Pierce County335,969
3Snohomish County302,970
4Spokane County209,640
5Clark County184,173
6Thurston County114,556
7Kitsap County104,977
8Whatcom County89,865
9Yakima County84,636
10Benton County74,290
11Skagit County50,540
12Cowlitz County42,776
13Island County35,102
14Clallam County33,636
15Grant County32,803
16Lewis County31,223
17Chelan County29,474
18Grays Harbor County29,319
19Franklin County27,721
20Mason County25,085
21Walla Walla County22,842
22Kittitas County18,772
23Stevens County18,222
24Whitman County18,010
25Okanogan County16,630
26Jefferson County15,497
27Douglas County15,278
28Pacific County9,878
29Klickitat County9,332
30Asotin County9,287
31San Juan County8,378
32Adams County6,158
33Pend Oreille County5,653
34Skamania County4,723
35Lincoln County4,440
36Ferry County2,934
37Wahkiakum County1,891
38Columbia County1,849
39Garfield County1,004

Other periods

About this ranking

Number of households, which equals the number of occupied housing units. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

People living in group quarters, such as college dormitories, nursing homes and prisons, are not in households.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B25003: occupied housing units (households) (Counties in Washington by households, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat

MLA 9

American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Washington by households, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Invokely, https://invokely.ai/rankings/households/washington-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25003: occupied housing units (households). Counties in Washington by households, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Also distributed by Invokely, https://invokely.ai/rankings/households/washington-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25003: occupied housing units (households), Counties in Washington by households, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat, via Invokely: https://invokely.ai/rankings/households/washington-counties?period=2021 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_washington_by_2021,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Washington by households, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/households/washington-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25003: occupied housing units (households): Counties in Washington by households, 2021
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat
L2  - https://invokely.ai/rankings/households/washington-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/households/washington-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25003: occupied housing units (households). https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25003.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest households?

King County, with 902,308 in 2021, according to the U.S. Census Bureau.

Which county has the lowest households?

Garfield County, with 1,004 in 2021.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B25003: occupied housing units (households). Retrieved 2026-10-12.

Households: other rankings

Counties in Washington: more rankings