Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area WA Demographic Data and Boundary Map


Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area Boundary Map

Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area Data & Demographics (As of July 1, 2017)


Total Population 3,808,715
Daytime Population: Workers 1,961,154
Daytime Population: Residents 1,885,073
Total Daytime Population (TDP) 3,846,227
Ratio TDP/Total Population1 1.01
Population in Households 3,737,786
Population in Familes 2,863,456
Population in Group Qrtrs 70,929
Population Density2 649
Diversity Index3 60


Median Household Income $75,432
Average Household Income $101,545
Per Capita Income $40,178


Total Housing Units 1,585,002 (100%)
Owner Occupied HU 895,662 (56.5%)
Renter Occupied HU 593,693 (37.5%)
Vacant Housing Units 95,647 ( 6.0%)
Median Home Value $375,986
Average Home Value $457,793


Total Households 1,489,355
Average Household Size 2.51
Family Households 922,892
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 1.42% 1.33%
Households 1.29% 1.28%
Families 1.21% 1.23%
Median Household Income   2.12%
Per Capita Income   2.48%