Snohomish County WA Information


Snohomish County Subdivisions

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


Total Population 750,932
Population in Households 740,328
Population in Familes 597,722
Population in Group Qrtrs 10,604
Population Density1 360
Diversity Index2 52


Total Households 283,731
Average Household Size 2.61
Family Households 191,918
Average Family Size 3


Total Housing Units 302,673 (100%)
Owner Occupied HU 184,422 (60.9%)
Renter Occupied HU 99,309 (32.8%)
Vacant Housing Units 18,942 ( 6.3%)
Median Home Value $356,233
Average Home Value $399,655


Median Household Income $70,063
Average Household Income $85,776
Per Capita Income $32,607
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.98% 1.23%
Households 1.07% 1.28%
Families 0.99% 1.23%
Median Household Income   2.62%
Per Capita Income   2.49%
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.


Snohomish County WA - Peer Comparisons by Rank and Percentile

The table below compares Snohomish 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 # 3 95th
Population Density1 # 7 85th
Diversity Index2 # 13 69th
Median Household Income # 2 97th
Per Capita Income # 3 95th

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