King County, WA population between 2000 and 2023
Over the last 20 plus years, between 2000 and 2023, population of King County increased by 531,957. In this period, the peak population was 2.27 million in the year 2020. The numbers suggest that the population has already reached its peak and is showing a trend of decline.
| Year | Population | Year on Year Change | Change in Percent |
|---|---|---|---|
| 2000 | 1,739,423 | - | - |
| 2001 | 1,755,501 | 16,078 | 0.92% |
| 2002 | 1,760,997 | 5,496 | 0.31% |
| 2003 | 1,766,529 | 5,532 | 0.31% |
| 2004 | 1,779,156 | 12,627 | 0.71% |
| 2005 | 1,799,766 | 20,610 | 1.16% |
| 2006 | 1,827,817 | 28,051 | 1.56% |
| 2007 | 1,853,435 | 25,618 | 1.40% |
| 2008 | 1,880,926 | 27,491 | 1.48% |
| 2009 | 1,918,203 | 37,277 | 1.98% |
| 2010 | 1,938,431 | 20,228 | 1.05% |
| 2011 | 1,974,499 | 36,068 | 1.86% |
| 2012 | 2,011,708 | 37,209 | 1.88% |
| 2013 | 2,047,967 | 36,259 | 1.80% |
| 2014 | 2,086,174 | 38,207 | 1.87% |
| 2015 | 2,127,372 | 41,198 | 1.97% |
| 2016 | 2,167,863 | 40,491 | 1.90% |
| 2017 | 2,205,001 | 37,138 | 1.71% |
| 2018 | 2,228,488 | 23,487 | 1.07% |
| 2019 | 2,249,653 | 21,165 | 0.95% |
| 2020 | 2,274,282 | 24,629 | 1.09% |
| 2021 | 2,252,980 | -21,302 | -0.94% |
| 2022 | 2,265,311 | 12,331 | 0.55% |
| 2023 | 2,271,380 | 6,069 | 0.27% |
TABLE OF CONTENTS
King County, WA population from 2000 to 2023
From 2000 to 2010, King County's population increased by 199,008 (11.44%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 9.63%.
From 2010 to 2020, King County's population increased by 335,851 (17.33%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.18% .
After the COVID19 pandemic and, between the year 2020 and 2023, King County's population decreased by 2,902 (0.13%).For the same period, the rate of growth for the United States was 1.02%.
FIGURE 1
King County's population from 2000 to 2023.
The estimated population at the end of 2023 was 2.27 million.
Between the year 2000 and 2023, King County's population peaked in year 2020 at 2.27 million.
Between the year 2000 and 2023, King County's population was lowest in year 2000 at 1.74 million.
King County, WA annual population growth rate
Between the years 2000 and 2023, i.e. 23 annual cycles, the population of King County grew year by year for 22 years and declined for 1 years.
From 2000 to 2023, King County had an average annual population growth rate of 1.33% per year. Overall the population grew 30.58% between 2000 and 2023.
FIGURE 2
King County annual population growth rate
The average annual growth rate from 2000 to 2023 was 1.33% per year.
From 2014 to 2015 King County population grew the most, with an increase of 41,198 people (a 1.97% year-on-year increase)..
From 2020 to 2021 King County population experienced the most significant decrease, with a decline of 21,302 people (a 0.94% year-on-year decline).
Things to know
Is King County, WA population increasing or decreasing?
According to the latest data from U.S. Census Bureau's population estimates, King County's population increased by 18,400 between 2021 and 2023. The increase was 12,331 (increased) between 2021 and 2022; and increase of 6,069 (0.27%) between 2022 and 2023.
How has the population of King County, WA changed in the last 10 years?
Between 2013 and 2023, population of King County increased by 223,413 (10.91%). The population was highest at 2.27 million in the year 2020 and lowest at 2.09 million in the year 2014. Overall the average growth rate witnessed for the last 10 years was 1.04%.
References
- US Census Bureau Population Estimates Population Estimates Program (PEP)