King County, Washington Population 2021

King County, Washington's estimated population is 2,301,620 with a growth rate of 1.07% in the past year according to the most recent United States census data. King County, Washington is the 2nd largest county inWashington. The 2010 Population was 1,938,350 and has seen a growth of 18.74% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Annual Growth Rate
20212,301,62024,4201.07%
20202,277,20024,4201.08%
20192,252,78024,4201.10%
20182,228,36024,5201.11%
20172,203,84037,4901.73%
20162,166,35040,1701.89%
20152,126,18040,9601.96%
20142,085,22038,0001.86%
20132,047,22036,0201.79%
20122,011,20037,0001.87%
20111,974,20035,8501.85%
20101,938,350431,03028.60%
19901,507,320237,57018.71%
19801,269,750113,1209.78%
19701,156,630221,61623.70%
1960935,014202,02227.56%
1950732,992228,01245.15%
1940504,98041,4638.95%
1930463,51774,24419.07%
1920389,273104,63536.76%
1910284,638174,585158.64%
1900110,05346,06471.99%
189063,98957,079826.03%
18806,9104,790225.94%
18702,1201,818601.99%
18603020.00%
2021 Growth Rate
1.07% (24,420)
County Website
Founded
December 22, 1852
County Seat
2010 Population
1,938,350
Growth Since 2010
18.74% (363,270)
map placeholder

King County, Washington Population Growth

Population by Race

Race Population Percentage
White1,404,32463.96%
Asian386,40417.60%
Black or African American141,7906.46%
Two or More Races140,6066.40%
Some Other Race92,3774.21%
Native Hawaiian and Other Pacific Islander16,9440.77%
American Indian and Alaska Native13,0570.59%
Loading...

King County, Washington Population by Race

King County, Washington Population Pyramid $2021

Loading...

King County, Washington Median Age

37


Total

36.3


Male

37.8


Female

King County, Washington Adults

There are 1,747,410 adults, (284,332 of whom are seniors) in King County, Washington.

King County, Washington Age Dependency

50.1

Age Dependency Ratio

19.4

Old Age Dependency Ratio

30.6

Child Dependency Ratio

King County, Washington Sex Ratio

Female

1,094,850

49.87%

Male

1,100,650

50.13%

King County, Washington Population by Age

King County, Washington Renter vs Owner Occupied by Household Type

map placeholder

King County, Washington Household Types

Type Owner Renter
Non Family37.9%62.1%
Female47.5%52.5%
Male49.3%50.7%
All56.9%43.1%
Married75.1%24.9%

56.9%

Rate of Home Ownership

King County, Washington Households and Families

Type Count Average Size Owned
All882,0282.4556.9
Married421,9003.1475.1
Non Family352,4651.3937.9
Female72,8073.1847.5
Male34,8563.249.3

3.06

Average Family Size

2.45

Average Household Size

Loading...

King County, Washington Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade52,6633.36%
9th to 12th Grade55,2723.53%
High School Graduate234,99115.00%
Some College277,55817.71%
Associates Degree123,9897.91%
Bachelors Degree491,96131.39%
Graduate Degree330,65421.10%
Loading...

King County, Washington Educational Attainment by Sex (over 25)

King County, Washington Educational Attainment by Race

Loading...
Race Total High School Bachelors
White1,003,700974,013565,458
Asian282,024252,034171,258
Hispanic118,28585,75731,589
Black89,94879,35325,220
2+ Races64,15960,12929,161
Other Race52,15332,2458,150
Islander10,3999,1871,342
Native American8,7977,0771,721

The highest rate of high school graduation is among white people with a rate of 97.04%.

The highest rate of bachelors degrees is among asian people with a rate of 60.72%.

King County, Washington Educational Attainment by Race

Loading...
Name Average Male Female
Overall$57,130$69,014$46,846
Less Than 9th Grade$29,198$32,369$23,071
High School Graduate$36,199$41,246$30,717
Some College$43,630$51,723$37,332
Bachelors Degree$70,934$89,133$55,039
Graduate Degree$92,801$118,463$72,835

$57,130

Average Earnings

$69,014

Average Male

$46,846

Average Female

King County, Washington Earnings by Educational Attainment

King County, Washington Language by Age

Loading...

King County, Washington Language

72.22% of King County, Washington residents speak only English, while 27.78% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 11.94% of the population.

King County, Washington Language

King County, Washington Poverty by Race

Loading...
Name Total In Poverty Poverty Rate
White1,293,00081,0426.27%
Black139,20133,53424.09%
Asian381,21733,1168.69%
Hispanic209,08730,07614.38%
Other91,37214,77016.16%
Multiple137,43514,75910.74%
Native12,5142,38919.09%
Islander16,6802,25813.54%

8.94%

Overall Poverty Rate

8.29%

Male Poverty Rate

9.60%

Female Poverty Rate

Poverty in King County, Washington

The race most likely to be in poverty in King County, Washington is Black, with 24.09% below the poverty level.

The race least likely to be in poverty in King County, Washington is White, with 6.27% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.10%. Among those working part-time, it was 13.16%, and for those that did not work, the poverty rate was 17.98%.

King County, Washington Poverty

Loading...
Name Poverty
Less Than 9th Grade21.50%
High School11.57%
Some College8.92%
Bachelors or Greater3.58%

King County, Washington Poverty Rate by Education

Loading...
Rate Poverty
Female Unemployed26.36%
Male Unemployed25.26%
Female Employed5.02%
Male Employed3.63%

King County, Washington Poverty Rate by Employment Status and Sex

King County, Washington Income by Household Type

Loading...
Name Median Mean
Households$94,974$128,360
Families$118,292$154,224
Married Families$135,810$173,337
Non Families$61,618$84,872
Loading...

Income by Household Type

King County, Washington Marital Status

map placeholder

Marriage Rates

50.3%

Overall Marriage Rate

51.0%

Male Marriage Rate

49.7%

Female Marriage Rate

King County, Washington Married by Age and Sex

Loading...

King County, Washington Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

King County, Washington Marital Status by Race

map placeholder

King County, Washington Marital Status

Loading...

100,581

Number of Veterans

91,616

Male Veterans

8,965

Female Veterans

War Veterans
Vietnam35,175
First Gulf War19,749
Second Gulf War18,937
Korea7,647
World War II4,177

King County, Washington Veterans by War

Loading...
Age Group Veterans
65 to 7425,444
35 to 5424,792
75+23,090
55 to 6417,966
18 to 349,289

King County, Washington Veterans by Age

Loading...
Name Veterans % of Total
White81,1767.00%
Black7,3587.09%
Asian5,4121.70%
Hispanic4,5773.24%
2+ Races3,5334.45%
Other Race1,3822.19%
Islander9467.81%
Native American7747.69%

King County, Washington Veterans by Race

King County, Washington Veterans by Education

Loading...

6.06%

Veteran Poverty Rate

26.12%

Veteran Disability Rate

King County, Washington Veterans by Education

Loading...

70.3%

Labor Force Participation

67.2%

Employment Rate

4.2%

Unemployment Rate

King County, Washington Employment by Age

Loading...

King County, Washington Employment by Race

Loading...

King County, Washington Employment by Education

Origin of Non-Citizens

Loading...

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Loading...

39.51%

Born in King County, Washington

76.88%

Native Born

23.12%

Foreign Born

12.21%

Non Citizen

10.91%

Naturalized

Place of Birth

76.88% of King County, Washington residents were born in the United States, with 39.51% having been born in Washington. 12.21% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

King County, Washington Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources