Data / Rankings / Housing units / Counties in Washington

Counties in Washington by housing units

King County had the highest housing units of 39 counties in 2021, at 957,123. Garfield County had the lowest, at 1,220. The median was 29,194 and the figure for Washington was 3.17 million. Source: the U.S. Census Bureau.

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Highest957,123King County
Lowest1,220Garfield County
Median29,19439 counties
Washington3,170,695History

Map of counties, 2021

Adams County: 6,696 countAsotin County: 10,039 countBenton County: 79,020 countChelan County: 37,125 countClallam County: 37,681 countClark County: 192,003 countColumbia County: 2,180 countCowlitz County: 45,210 countDouglas County: 17,188 countFerry County: 4,104 countFranklin County: 29,194 countGarfield County: 1,220 countGrant County: 38,306 countGrays Harbor County: 35,928 countIsland County: 41,783 countJefferson County: 18,960 countKing County: 957,123 countKitsap County: 112,718 countKittitas County: 23,505 countKlickitat County: 10,485 countLewis County: 35,271 countLincoln County: 5,745 countMason County: 33,219 countOkanogan County: 21,845 countPacific County: 15,999 countPend Oreille County: 7,968 countPierce County: 355,970 countSan Juan County: 13,739 countSkagit County: 55,285 countSkamania County: 5,785 countSnohomish County: 318,604 countSpokane County: 221,968 countStevens County: 22,102 countThurston County: 120,086 countWahkiakum County: 2,161 countWalla Walla County: 24,855 countWhatcom County: 98,941 countWhitman County: 20,732 countYakima County: 89,952 count
  • Under 7,000
  • 7,000 to 18K
  • 18K to 29K
  • 29K to 39K
  • 39K to 110K
  • 110K and over
count, 2021. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2021

King County: 957,123 countKing County957,123Pierce County: 355,970 countPierce County355,970Snohomish County: 318,604 countSnohomish County318,604Spokane County: 221,968 countSpokane County221,968Clark County: 192,003 countClark County192,003Thurston County: 120,086 countThurston County120,086Kitsap County: 112,718 countKitsap County112,718Whatcom County: 98,941 countWhatcom County98,941Yakima County: 89,952 countYakima County89,952Benton County: 79,020 countBenton County79,020Skagit County: 55,285 countSkagit County55,285Cowlitz County: 45,210 countCowlitz County45,210Island County: 41,783 countIsland County41,783Grant County: 38,306 countGrant County38,306Clallam County: 37,681 countClallam County37,681Chelan County: 37,125 countChelan County37,125Grays Harbor County: 35,928 countGrays Harbor County35,928Lewis County: 35,271 countLewis County35,271Mason County: 33,219 countMason County33,219Franklin County: 29,194 countFranklin County29,194Walla Walla County: 24,855 countWalla Walla County24,855Kittitas County: 23,505 countKittitas County23,505Stevens County: 22,102 countStevens County22,102Okanogan County: 21,845 countOkanogan County21,845Whitman County: 20,732 countWhitman County20,732Jefferson County: 18,960 countJefferson County18,960Douglas County: 17,188 countDouglas County17,188Pacific County: 15,999 countPacific County15,999San Juan County: 13,739 countSan Juan County13,739Klickitat County: 10,485 countKlickitat County10,485Asotin County: 10,039 countAsotin County10,039Pend Oreille County: 7,968 countPend Oreille County7,968Adams County: 6,696 countAdams County6,696Skamania County: 5,785 countSkamania County5,785Lincoln County: 5,745 countLincoln County5,745Ferry County: 4,104 countFerry County4,104Columbia County: 2,180 countColumbia County2,180Wahkiakum County: 2,161 countWahkiakum County2,161Garfield County: 1,220 countGarfield County1,220King County: 957,123 countKing County957,123Pierce County: 355,970 countPierce County355,970Snohomish County: 318,604 countSnohomish County318,604Spokane County: 221,968 countSpokane County221,968Clark County: 192,003 countClark County192,003Thurston County: 120,086 countThurston County120,086Kitsap County: 112,718 countKitsap County112,718Whatcom County: 98,941 countWhatcom County98,941Yakima County: 89,952 countYakima County89,952Benton County: 79,020 countBenton County79,020Skagit County: 55,285 countSkagit County55,285Cowlitz County: 45,210 countCowlitz County45,210Island County: 41,783 countIsland County41,783Grant County: 38,306 countGrant County38,306Clallam County: 37,681 countClallam County37,681Chelan County: 37,125 countChelan County37,125Grays Harbor County: 35,928 countGrays Harbor County35,928Lewis County: 35,271 countLewis County35,271Mason County: 33,219 countMason County33,219Franklin County: 29,194 countFranklin County29,194Walla Walla County: 24,855 countWalla Walla County24,855Kittitas County: 23,505 countKittitas County23,505Stevens County: 22,102 countStevens County22,102Okanogan County: 21,845 countOkanogan County21,845Whitman County: 20,732 countWhitman County20,732Jefferson County: 18,960 countJefferson County18,960Douglas County: 17,188 countDouglas County17,188Pacific County: 15,999 countPacific County15,999San Juan County: 13,739 countSan Juan County13,739Klickitat County: 10,485 countKlickitat County10,485Asotin County: 10,039 countAsotin County10,039Pend Oreille County: 7,968 countPend Oreille County7,968Adams County: 6,696 countAdams County6,696Skamania County: 5,785 countSkamania County5,785Lincoln County: 5,745 countLincoln County5,745Ferry County: 4,104 countFerry County4,104Columbia County: 2,180 countColumbia County2,180Wahkiakum County: 2,161 countWahkiakum County2,161Garfield County: 1,220 countGarfield County1,220
count. Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25001: total housing units. Retrieved 2026-10-12.

Full ranking

RankCounties2021
count
1King County957,123
2Pierce County355,970
3Snohomish County318,604
4Spokane County221,968
5Clark County192,003
6Thurston County120,086
7Kitsap County112,718
8Whatcom County98,941
9Yakima County89,952
10Benton County79,020
11Skagit County55,285
12Cowlitz County45,210
13Island County41,783
14Grant County38,306
15Clallam County37,681
16Chelan County37,125
17Grays Harbor County35,928
18Lewis County35,271
19Mason County33,219
20Franklin County29,194
21Walla Walla County24,855
22Kittitas County23,505
23Stevens County22,102
24Okanogan County21,845
25Whitman County20,732
26Jefferson County18,960
27Douglas County17,188
28Pacific County15,999
29San Juan County13,739
30Klickitat County10,485
31Asotin County10,039
32Pend Oreille County7,968
33Adams County6,696
34Skamania County5,785
35Lincoln County5,745
36Ferry County4,104
37Columbia County2,180
38Wahkiakum County2,161
39Garfield County1,220

Other periods

About this ranking

All housing units, occupied and vacant: houses, apartments, mobile homes and rooms intended as separate living quarters. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A survey estimate averaged over five years, not a count on one date.

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 B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.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 B25001: total housing units (Counties in Washington by housing units, 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat

MLA 9

American Community Survey 5-year estimates, table B25001: total housing units, Counties in Washington by housing units, 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Invokely, https://invokely.ai/rankings/housing-units/washington-counties?period=2021. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B25001: total housing units. Counties in Washington by housing units, 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Also distributed by Invokely, https://invokely.ai/rankings/housing-units/washington-counties?period=2021.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B25001: total housing units, Counties in Washington by housing units, 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat, via Invokely: https://invokely.ai/rankings/housing-units/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 B25001: total housing units: Counties in Washington by housing units, 2021}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/housing-units/washington-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B25001: total housing units: Counties in Washington by housing units, 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-b25001.dat
L2  - https://invokely.ai/rankings/housing-units/washington-counties?period=2021
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/housing-units/washington-counties?period=2021.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B25001: total housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b25001.dat. Retrieved 2026-10-12.
ER  -
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Questions

Which county has the highest housing units?

King County, with 957,123 in 2021, according to the U.S. Census Bureau.

Which county has the lowest housing units?

Garfield County, with 1,220 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 B25001: total housing units. Retrieved 2026-10-12.

Housing units: other rankings

Counties in Washington: more rankings