United Way of King CountyUnited Way of King County Community Assessment - King County review of health and human services

Population


King County Population Overview

Population

• King County’s estimated population in 2006 was 1,805,461.
• King County represents 28.6% of Washington State’s population.
• Between 2000 and 2006 the County population grew at a rate of 3.9%.
• The County’s distinct position as the largest population center in the State poses many opportunities and challenges.

Download Data | Source: Claritas 2006 Update (Census Tract Level)

Subregional Boundaries
  • King County is divided into four regions in order to distinguish trends at finer level of detail.   
  • Boundaries are delineated using the 19 school districts serving the county.  Read more about Geographic Boundaries.
  • Data is queried by census tract then grouped by district boundaries to create a subregion.

Source: Communities Count, 2005, Public Health--Seattle & King County, http://www.communtiescount.org

Using the 2000 census tract boundaries, the data is organized as follows:

  • North King County 31 census tracts
  • East King County 88 census tracts
  • South King County 130 census tracts
  • Seattle 124 census tracts

Download Data | Source: Claritas 2006 Update (Census Tract Level)

Subregional Population

Between 1990-2000, the U.S. Census reports that King County grew at a rate of 15.2%, with an additional 3.9% growth in the last six years (2000-2006). The following data shows how distinct growth patterns are emerging by subregion.

North King County
  • North King County currently makes up 7.8% of the King County population.
  • 1990 to 2000 growth rate: 9.7%. (12,322 people).
  • 2000 to 2006 growth rate .6% (791 people).
  • This represents the slowest growth rate among King County subregions.
East King County
  • East King County currently represents 24.8% of the total County population.
  • 1990 to 2000 growth rate: 19.4% (67,064)
  • 2000 to 2006 growth rate: 8.4% (34,555 people)
South King County
  • South King County has the largest population with 35.4% of the total county population.
  • 1990 to 2000 growth rate: 20%.
  • 2000 to 2006 growth rate 3% (18,424 people).
Seattle
  • Seattle currently has the second highest population with 32% of the total King County population.
  • 1990 to 2000 growth rate: 9.1%
  • 2000 to 2006 growth rate 2.6% (14,657 people)

Download Data | Source: Claritas 2006 Update (Census Tract Level)

Demographic Data Sources

Our demographic data is based on secondary sources. The 2006 population estimates and five-year projections are compiled using the 2006 Claritas data set. Other sources -- including the 2000 Decennial Census, 2006 American Community Survey and the Office of the Superintendent of Public Instruction, Washington -- are used to add context and expand upon the core data set.

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