SeaTac Flag

SeaTac

County:
King County
County Seat:
No
Area (mi²):
10.064
State:
Washington

SeaTac is a city located in King County, Washington. SeaTac has a 2026 population of 35,342. SeaTac is currently growing at a rate of 1.9% annually and its population has increased by 12.6% since the most recent census, which recorded a population of 31,387 in 2020.

The median household income in SeaTac is $81,104 with a poverty rate of 9.32%. The median age in SeaTac is 36.8 years: 37.2 years for males, and 36.5 years for females. For every 100 females there are 123.3 males.

35.3K
Total Population
3,512
Density (mi²)
659 1.9%
Growth

SeaTac Population

SeaTac Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202635,3426591.9%
202534,6836591.94%
202434,0248722.63%
202333,1521,1403.56%
202232,0124151.31%
202131,5972100.67%
202031,387-52-0.17%
201929,034-123-0.42%
201829,157-183-0.62%
201729,3401560.53%
201629,1846302.21%
201528,5541760.62%
201428,3782080.74%
201328,1701830.65%
201227,9874171.51%
201127,5705712.11%
201026,999900.33%
200025,4962,69611.82%
199022,80000%

Median Age

Overall: 36.8 years
Female: 36.5 years
Male: 37.2 years

SeaTac Adults

There are 25,108 adults, (4,141 of whom are seniors) in SeaTac.

Sex Ratio

Female: 14,518 (44.8%)
Male: 17,896 (55.2%)

Demographics

The racial composition of SeaTac includes 28.74% White, 24.63% Black or African American, 17.39% Asian, 16.9% other race, and smaller percentages for Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White9,31728.74%
Black or African American7,98224.63%
Asian5,63817.39%
Other race5,47916.9%
Two or more races3,40910.52%
Native Hawaiian or Pacific Islander4201.3%
Native American1690.52%
Race
Population ↓
Percentage (of total)
Other race5,40916.69%
Two or more races1,2363.81%
White5761.78%
Black or African American820.25%
Native American810.25%
Race
Population ↓
Percentage (of total)
White8,74126.97%
Black or African American7,90024.37%
Asian5,63817.39%
Two or more races2,1736.7%
Native Hawaiian or Pacific Islander4201.3%
Native American880.27%
Other race700.22%

SeaTac Marital Status

Economics and Income Statistics

SeaTac 's average per capita income is $48,755. Household income levels show a median of $81,104. The poverty rate stands at 9.32%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$102,088-
Families$93,131$105,147
Households$81,104$98,134
Non Families$58,091$81,103

$48,755

Average Income

$81,104

Median Household Income

9.32%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)