County · Washington

King County, Washington

King County, Washington. King County had 2,344,939 residents in 2025 by the Census Bureau's estimate, up 3.3% since 2020, in line with Washington (+3.8%). It holds 63 places (39 cities, villages and boroughs and 24 census-designated) and 495 census tracts. GEOID 53033.

King County is one of the 3 counties of the Seattle-Tacoma-Bellevue, WA metropolitan statistical area (the Census Bureau's July 2023 delineation).

Residents, July 2025 estimate

2,344,939

Census Bureau estimate (no margin published)
2020 Census count: 2,269,675 · ACS 2020-2024: 2,287,171

Median household income

$124,746

±$968 (90% margin)
Washington: $98,141

Median home value

$859,900

±$4,853 (90% margin)
Washington: $564,600

Median gross rent

$2,092

±$13 (90% margin)
Washington: $1,760

How many people live in King County, and is it growing?

The 2020 Census counted 2,269,675 residents in King County. The Census Bureau estimates 2,344,939 for July 1, 2025, up 3.3% since 2020, in line with Washington (+3.8%). The 2020-2024 American Community Survey puts the population at 2,287,171 over 2,116 square miles of land.

July 2020→2021 −20,755 (2,253,549)
2021→2022 +12,273 (2,265,822)
2022→2023 +17,264 (2,283,086)
2023→2024 +34,873 (2,317,959)
2024→2025 +26,980 (2,344,939)

King County in Washington. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	King County	Washington	Change since 2015-2019
Total population	2,287,171	7,816,116	+91,669
Households	941,054±2,581	3,064,820	+59,026
Average household size	2.39±0.01	2.50	−0.06
Housing units	1,003,284±329	3,306,620	+67,813

King County's population since 2000

From 1,737,034 in 2000 to 2,344,939 in 2025: up 35.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 1,737,034
2005 (estimate) 1,795,268
2010 Census 1,931,249
2015 (estimate) 2,127,372
2020 Census 2,269,675
2025 (estimate) 2,344,939

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in King County?

King County holds 63 places: 39 cities, villages and boroughs (incorporated places) and 24 census-designated places. The largest is Seattle with 784,777 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in King County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Seattle	city	737,015	754,195±72	$123,860	$938,600	9.9%	100%
Bellevue	city	151,854	151,847±87	$165,576	$1,340,300	7.2%	100%
Kent	city	136,588	135,603±113	$92,302	$587,800	10.8%	100%
Renton	city	106,785	105,317±65	$100,432	$672,600	8.1%	100%
Federal Way	city	101,030	99,493±51	$86,909	$552,800	13.0%	100%
Kirkland	city	92,175	92,621±98	$150,414	$1,115,400	6.1%	100%
Auburn	city	87,256	85,676±65	$97,884	$547,900	8.9%	89%
Redmond	city	73,256	77,353±55	$162,560	$1,167,800	5.6%	100%
Sammamish	city	67,455	66,463±44	$239,690	$1,407,300	4.3%	100%
Shoreline	city	58,608	61,431±39	$112,751	$811,100	8.8%	100%
Burien	city	52,066	51,513±47	$91,318	$638,800	12.9%	100%
Issaquah	city	40,051	39,591±52	$154,669	$963,000	5.2%	100%
Des Moines	city	32,888	32,823±46	$92,483	$597,000	12.1%	100%
SeaTac	city	31,454	32,414±74	$81,104	$519,700	9.3%	100%
Bothell	city	48,161	49,610±53	$140,427	$925,100	4.8%	60%
Maple Valley	city	28,013	28,287±47	$152,885	$724,700	4.8%	100%
Mercer Island	city	25,748	25,307±32	$219,069	$2,000,000 or more	3.8%	100%
Kenmore	city	23,914	23,741±70	$139,764	$920,800	5.7%	100%
Cottage Lake	CDP	22,857	22,518±1,434	$213,106	$1,230,700	3.2%	100%
Union Hill-Novelty Hill	CDP	22,683	23,047±1,494	$185,369	$1,218,500	5.7%	100%
Tukwila	city	21,798	21,451±47	$78,381	$489,000	13.0%	100%
Covington	city	20,777	21,233±42	$134,502	$637,300	5.0%	100%
Fairwood (King County)	CDP	19,396	17,856±1,201	$122,134	$733,200	8.4%	100%
Bryn Mawr-Skyway	CDP	17,397	17,638±1,454	$90,969	$655,200	13.3%	100%
White Center	CDP	16,631	14,886±1,176	$87,189	$645,200	14.5%	100%
Snoqualmie	city	14,121	13,798±30	$214,107	$977,200	0.8%	100%
Lakeland North	CDP	13,663	15,950±1,367	$105,216	$557,000	14.4%	100%
Lake Forest Park	city	13,630	13,335±40	$159,904	$953,200	4.0%	100%
Lakeland South	CDP	13,169	13,100±1,286	$110,735	$589,300	6.2%	100%
Woodinville	city	13,069	13,438±43	$164,398	$1,100,100	2.9%	100%
Newcastle	city	13,017	12,989±26	$160,278	$1,205,600	5.9%	100%
Enumclaw	city	12,543	12,798±26	$121,250	$524,600	7.5%	100%
East Renton Highlands	CDP	11,937	12,582±1,605	$142,500	$778,700	3.1%	100%
Vashon	CDP	11,055	9,934±1,020	$120,571	$790,700	11.1%	100%
Lake Morton-Berrydale	CDP	10,474	11,183±1,156	$129,833	$714,200	3.7%	100%
Duvall	city	8,034	8,526±32	$197,361	$830,100	12.8%	100%
North Bend	city	7,461	7,953±31	$175,109	$1,048,600	4.1%	100%
Pacific	city	7,235	7,066±35	$115,625	$489,100	13.8%	99%
Normandy Park	city	6,771	6,659±21	$162,476	$1,014,100	4.9%	100%
Hobart	CDP	6,767	6,552±757	$160,536	$950,300	3.5%	100%
Black Diamond	city	4,697	5,961±26	$141,383	$779,100	2.1%	100%
Boulevard Park	CDP	4,094	4,575±990	$78,954	$456,100	28.0%	100%
Maple Heights-Lake Desire	CDP	3,873	4,113±566	$143,148	$876,200	6.0%	100%
Mirrormont	CDP	3,858	4,019±535	$181,842	$973,900	3.2%	100%
Lake Holm	CDP	3,430	3,555±570	$177,371	$828,600	1.1%	100%
Algona	city	3,290	3,247±26	$85,332	$441,500	12.1%	100%
Clyde Hill	city	3,126	3,119±23	$250,000 or more	$2,000,000 or more	2.6%	100%
Medina	city	2,915	2,928±24	$250,000 or more	$2,000,000 or more	4.7%	100%
Shadow Lake	CDP	2,396	2,465±568	$152,552	$816,300	11.9%	100%
Carnation	city	2,158	2,366±391	$152,763	$875,000	1.6%	100%
Riverbend	CDP	2,123	1,748±333	$148,269	$811,100	3.3%	100%
Fall City	CDP	2,032	1,618±314	$177,019	$1,010,300	2.2%	100%
Milton	city	8,697	8,894±632	$96,540	$539,700	10.2%	19%
Wilderness RimGEOID 5378780	CDP	1,617	1,560±424	$149,870	$681,300	3.3%	100%
Ames LakeGEOID 5301920	CDP	1,524	1,245±317	$250,000 or more	$1,225,000	1.1%	100%
Lake Marcel-StillwaterGEOID 5337538	CDP	1,334	1,549±449	$201,845	$847,500	5.3%	100%
Yarrow Point	town	1,134	1,198±212	$250,000 or more	$2,000,000 or more	4.5%	100%
RiverpointGEOID 5358768	CDP	774	831±222	$175,577	$1,121,000	0.7%	100%
RavensdaleGEOID 5357395	CDP	555	198±104	$207,386	$1,400,000	6.6%	100%
Hunts Point	town	457	289±51	$250,000 or more	$2,000,000 or more	10.0%	100%
Beaux Arts Village	town	317	233±53	$248,750	$2,000,000 or more	5.2%	100%
BaringGEOID 5304300	CDP	255	177±91	$79,659	$617,200	11.9%	100%
SkykomishGEOID 5364855	town	161	92±36	$62,917	$408,300	17.4%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in King County?

The median resident of King County is 37.4 years old; 19.5% are under 18 and 14.0% are 65 or older. The largest group is non-Hispanic white residents at 52.9%, then non-Hispanic Asian residents at 20.5%. 25.8% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	King County	Washington	Change since 2015-2019
Median age	37.4±0.2	38.3	+0.4
Under 18 years	19.5%	21.4%	–
65 years and over	14.0%	16.6%	–
Hispanic or Latino (any race)	11.0%	14.4%	+1.3 pts
White alone, not Hispanic	52.9%±0.1 pts	63.1%	−6.7 pts
Black or African American alone, not Hispanic	6.4%±0.1 pts	3.8%	no clear change
Asian alone, not Hispanic	20.5%±0.1 pts	9.7%	+3.0 pts
American Indian and Alaska Native alone, not Hispanic	0.4%±0.1 pts	0.8%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.7%±0.1 pts	0.7%	–
Two or more races, not Hispanic	7.3%±0.2 pts	6.8%	–
Some other race alone, not Hispanic	0.6%±0.1 pts	0.6%	–
Born outside the United States	25.8%±0.3 pts	15.4%	+2.7 pts
Speak a language other than English at home (age 5+)	31.1%±0.3 pts	21.4%	–
Civilian veterans (age 18+)	4.5%±0.1 pts	7.8%	–
With a disability	10.3%±0.2 pts	13.6%	–
No health insurance coverage	5.2%±0.2 pts	6.3%	no clear change
High school graduate or higher (age 25+)	93.8%±0.2 pts	92.3%	–
Bachelor's degree or higher (age 25+)	56.7%±0.3 pts	39.6%	+4.2 pts
Graduate or professional degree (age 25+)	24.2%±0.3 pts	15.6%	–
Moved from another state in the past year	3.5%±0.1 pts	2.9%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in King County earn?

Half of King County's 941,054 households earn less than $124,746 a year (±$968), against $98,141 in Washington. In 2015-2019 the median was $116,884 in 2024 dollars, so it rose by $7,862 after inflation. 8.6% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	King County	Washington	Change since 2015-2019
Median household income	$124,746±$968	$98,141	+$7,862
Mean household income	$176,799±$1,434	$134,588	–
Per capita income	$74,100±$589	$53,744	+$9,535
People below the poverty line	8.6%±0.2 pts	9.9%	−0.3 pts
Children under 18 below the poverty line	9.7%±0.7 pts	11.6%	no clear change
Households receiving SNAP	8.2%±0.3 pts	11.5%	–
Households with a broadband subscription	95.1%±0.2 pts	93.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in King County?

Owners occupy 55.4% of King County's occupied homes and renters 44.6%. The median owner-occupied home is valued at $859,900 by its owner (±$4,853). The median renter pays $2,092 a month including utilities, and 37.5% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	King County	Washington	Change since 2015-2019
Median home value (owner-occupied)	$859,900±$4,853	$564,600	+$184,003
Median gross rent	$2,092±$13	$1,760	+$116
Renters paying 35% or more of income on rent	37.5%±0.7 pts	40.1%	+1.7 pts
Median monthly owner costs, with a mortgage	$3,273±$20	$2,445	–
Owner-occupied homes	55.4%±0.4 pts	63.8%	−1.5 pts
Housing units	1,003,284±329	3,306,620	+67,813
Homeowner vacancy rate	0.7%±0.1 pts	0.7%	–
Rental vacancy rate	5.3%±0.4 pts	4.5%	–
Single-family detached homes	50.0%±0.3 pts	61.9%	–
Mobile homes	1.4%±0.1 pts	5.5%	–
Built 2020 or later	2.1%±0.1 pts	2.3%	–
Built 1939 or earlier	10.9%±0.2 pts	9.6%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is King County building?

Builders took permits for 8,505 new housing units across King County in 2025 (2,510 single-family), 3.6 per 1,000 residents.

2019 17,919 units
2020 12,337 units
2021 19,549 units
2022 18,830 units
2023 10,601 units
2024 10,564 units
2025 8,505 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in King County get to work?

50.4% of King County's workers drive alone and 29.2% work from home. The average trip to work takes 27.6 minutes. The unemployment rate in 2020-2024 averaged 4.8%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	King County	Washington	Change since 2015-2019
In the labor force (age 16+)	69.9%±0.2 pts	64.5%	–
Unemployment rate	4.8%±0.2 pts	5.1%	+0.6 pts
Drove alone to work	50.4%±0.4 pts	63.4%	–
Carpooled	7.0%±0.3 pts	8.5%	–
Public transportation	6.8%±0.2 pts	3.4%	–
Walked	4.3%±0.2 pts	3.0%	–
Worked from home	29.2%±0.3 pts	19.8%	+22.3 pts
Mean travel time to work	27.6 min±0.2	26.6 min	−2.3 min

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are King County's census tracts?

King County is divided into 495 census tracts. Among those with a reliable estimate, median household income runs from $17,500 (Tract 53.04) to $250,000 or more (Tract 326.03).

All 495 census tracts of King County, with their figures

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does King County compare with Washington's other counties?

King County's rank among Washington's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	1st of 39
Growth 2020-2025	28th of 39
Residents per square mile	1st of 39
Median household income	1st of 39
Median home value	1st of 39
Median gross rent	1st of 39
Poverty rate	32nd of 39
Bachelor's degree or higher	1st of 39
Median age	31st of 39

Every county in Washington

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for King County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.