King County WA Information


King County Subdivisions

King County WA Data & Demographics (As of July 1, 2015)


Total Population 2,049,757
Population in Households 2,009,970
Population in Familes 1,490,588
Population in Group Qrtrs 39,787
Population Density1 969
Diversity Index2 62


Total Households 836,532
Average Household Size 2.4
Family Households 486,495
Average Family Size 3


Total Housing Units 897,509 (100%)
Owner Occupied HU 475,143 (52.9%)
Renter Occupied HU 361,389 (40.3%)
Vacant Housing Units 60,977 ( 6.8%)
Median Home Value $461,415
Average Home Value $543,414


Median Household Income $73,529
Average Household Income $97,575
Per Capita Income $40,093
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.14% 1.45%
Households 1.11% 1.47%
Families 1.01% 1.41%
Median Household Income   2.48%
Per Capita Income   2.67%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


King County WA - Peer Comparisons by Rank and Percentile

The table below compares King County to the other 39 counties and county equivalents in Washington by rank and percentile using July 1, 2015 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1 100th
Population Density1 # 1 100th
Diversity Index2 # 8 82nd
Median Household Income # 1 100th
Per Capita Income # 1 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.