Snohomish County WA Information


Snohomish County Subdivisions

Snohomish County WA Data & Demographics (As of July 1, 2017)


Total Population 784,389
Daytime Population: Workers 308,002
Daytime Population: Residents 394,452
Total Daytime Population (TDP) 702,454
Ratio TDP/Total Population1 0.90
Population in Households 774,013
Population in Familes 623,017
Population in Group Qrtrs 10,376
Population Density2 376
Diversity Index3 54


Median Household Income $75,476
Average Household Income $93,836
Per Capita Income $35,467


Total Housing Units 310,415 (100%)
Owner Occupied HU 192,595 (62.0%)
Renter Occupied HU 100,300 (32.3%)
Vacant Housing Units 17,520 ( 5.6%)
Median Home Value $345,381
Average Home Value $398,674


Total Households 292,895
Average Household Size 2.64
Family Households 198,156
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 1.32% 1.39%
Households 1.22% 1.33%
Families 1.16% 1.29%
Median Household Income   1.76%
Per Capita Income   2.38%


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, 2017 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 Density # 7 85th
Diversity Index # 12 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.