Washington Census & Demographic Data - July 1, 2018


Washington Census Data

The tables below provide updated data and demographic estimates for Washington as of July 1, 2018. Our Washington Census Data Comparison Tool allows you to compare and rank WA cities, towns, ZIP Codes and Counties.

Washington Data & Demographics (As of July 1, 2018)


Total Population 7,452,102
Population in Households 7,303,401
Population in Familes 5,740,794
Population in Group Qrtrs 148,701
Population Density2 112
Diversity Index3 57


Median Household Income $68,734
Average Household Income $94,203
Per Capita Income $36,796


Total Housing Units 3,142,423 (100%)
Owner Occupied HU 1,806,152 (57.5%)
Renter Occupied HU 1,067,981 (34.0%)
Vacant Housing Units 268,290 ( 8.5%)
Median Home Value $332,895
Average Home Value $416,832


Total Households 2,874,133
Average Household Size 2.54
Family Households 1,839,219
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 1.25% 1.3%
Households 1.13% 1.27%
Families 1.05% 1.22%
Median Household Income   2.92%
Per Capita Income   2.79%