CensusEasy
COUNTY · 1990 CENSUS

King County

Washington · 1,507,319 residents · 2,115.736 sq mi
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The short version

King County is wealthier than most US places, with a median household income of $36,179. Population has declined 13% since 2000. 33% of adults hold a bachelor's degree or higher, well above the national rate of 20%. Median home value is $139,500.

At a glance
Wealthier
above the US median
US median: $30,130
Mid-age
median age 33.8
US median: 33.0
More educated
33% hold a bachelor's degree
US average: 20%
More affordable
home values down 19%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
1,507,319
−13%vs 2000
vs 1,737,034 in 2000
1990 – 2025
Population density
712 / sq mi
−13%vs 2000
vs 821 / sq mi in 2000
US average: 221
Median age
33.8
−5%vs 2000
vs 35.7 in 2000
US average: 33.0
Population, 1990 – 2024
1.4M1.7M1.9M2.1M2.4M1990201020202024King County
20242.3M
1990201020202024
Section 02

Income & economy

Median household income
$36,179
−10%inflation adjusted, since 2000
vs $53,157 in 2000
US average: $30,130
1990 – 2024
Per capita income
$18,587
−37%vs 2000
vs $29,521 in 2000
US average: $14,340
Poverty rate
8.0%
−0.4 ptsvs 2000
vs 8.4% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$139,500
−19%inflation adjusted, since 2000
vs $226,400 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$510
−11%inflation adjusted, since 2000
vs $758 in 2000
US average: $450
Owner-occupied
58.8%
−1.1 ptsvs 2000
vs 59.8% in 2000
41.2% rent
Afford Score
3.9
−9%vs 2000
vs 4.3 in 2000
1990 – 2024
RELATED:See current rent listings in King County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic73.4%(1,275,127)
Black5.3%(91,798)
Hispanic / Latino5.5%(95,242)
Asian10.7%(186,615)
Other0%
Diversity Score47.8%(830,831)
1990
White, non-Hispanic84.9%(1,280,287)
Black5%(74,968)
Hispanic / Latino2.8%(42,160)
Asian7.9%(119,070)
Other2.2%(32,994)
Diversity Score38.5%(580,015)
Diversity Score
38
−20%vs 2000
vs 48 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
32.8%
−7.1 ptsvs 2000
vs 40.0% in 2000
US average: 20.3%
High school or higher
88.2%
−2.0 ptsvs 2000
vs 90.3% in 2000
US average: 75.2%
Graduate degree
10.0%
−3.3 ptsvs 2000
vs 13.3% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
23.9 min
+36%vs 2000
vs 17.6 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to King County

Orange County
Pop 3,149,507
Alameda County
Pop 1,636,630
Middlesex County
Pop 1,669,979
Suffolk County
Pop 1,546,090
Places similar to King County
Head to head

Compare King County to nearby counties

KING COUNTY VS
Pierce County
Income$99,564+175%
Home value$526,600+277%
Population946,288−60%
SEE FULL COMPARISON →
KING COUNTY VS
Snohomish County
Income$111,246+207%
Home value$696,000+399%
Population870,656−63%
SEE FULL COMPARISON →
KING COUNTY VS
Kitsap County
Income$104,158+188%
Home value$555,100+298%
Population283,374−88%
SEE FULL COMPARISON →
KING COUNTY VS
Kittitas County
Income$73,804+104%
Home value$497,400+257%
Population48,803−98%
SEE FULL COMPARISON →
Frequently asked

How many people live in King County, Washington?

King County, Washington has about 1,507,319 residents according to the 1990 Census.

What is the median household income in King County, Washington?

The typical household in King County, Washington earns about $36,179 a year. Half of households make more than that, and half make less.

Is King County, Washington expensive?

In King County, Washington, the median home is worth about $139,500, and the typical rent is about $510 a month.

How educated are people in King County, Washington?

About 32.8% of adults age 25 and over in King County, Washington hold a bachelor's degree or higher.

What is the poverty rate in King County, Washington?

About 8.0% of people in King County, Washington live below the federal poverty line.

Keep going

Explore from here

495 census tracts (top 20 by population)
Census Tract 322.20Census Tract 228.03Census Tract 316.03Census Tract 327.04Census Tract 205Census Tract 324.02Census Tract 296.02Census Tract 300.03Census Tract 289.02Census Tract 323.13Census Tract 230Census Tract 288.02Census Tract 233Census Tract 226.05Census Tract 308.01Census Tract 320.05Census Tract 273Census Tract 86Census Tract 95Census Tract 218.03
86 ZIP codes (top 30 by population)
ZIP 98052ZIP 98115ZIP 98133ZIP 98103ZIP 98034ZIP 98003ZIP 98118ZIP 98023ZIP 98092ZIP 98042ZIP 98105ZIP 98125ZIP 98122ZIP 98058ZIP 98059ZIP 98033ZIP 98032ZIP 98198ZIP 98031ZIP 98006ZIP 98004ZIP 98030ZIP 98002ZIP 98001ZIP 98038ZIP 98155ZIP 98056ZIP 98117ZIP 98168ZIP 98109
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →