Seatac, WA Population

Overview

30,867

Total Population

36.1

Median age

45.73%

Female population %

118.7:100

Gender ratio (M:F)

30-34 years

Largest age group

44.7

Total dependency ratio

White

Largest racial group

6,711

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Seatac's population is young compared to the rest of the country:

The median age in Seatac is 36.1, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Seatac's population under 18 was 22.34%, compared to the 22.51% nationwide.
Seatac's elderly or the senior population (over 65 age) was 11.98% as compared to 16.04% nationwide.
Of the total population in Seatac, 18.90% were under the age of 15, 19.51% aged 15 to 29, 49.61% aged 30 to 64, 10.79% aged 65 to 84, and 1.18% were 85 years of age and older.

There are 2,633 less females than males in Seatac:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 45.73% females and 54.27% males in Seatac, WA.
The Seatac, WA gender ratio is 118.7:100 i.e. 118.7 men to 100 women (1.187).
For male population, the largest age group is 35-39 years with a population of 1,558.
For the female population, the largest age group is 30-34 years with a population of 1,464.

Seatac's population has become increasingly diverse:

Racial distribution of Seatac population: 37.54% are White, 22.28% are Black or African American, 0.83% are American Indian and Alaska Native, 13.50% are Asian, 3.22% are Native Hawaiian and other Pacific Islander, 14.40% are some other race and 8.22% are multiracial.
Seatac's racial breakdown clearly shows that there is no majority of any race in the city.
By ethnicity, 6,711 is Hispanic or Latino (of any race), and 24,156 (78.26% of the total population) is Non-Hispanic.
The largest racial group in Seatac is White with a population of 11,588 (37.54% of the total population).

Seatac's population has already reached its peak and is showing a trend of decline:

The peak population was 31,398 in the year 2020
From 2000 to 2010, Seatac's population increased by 1,490 (5.84%), as compared to the national growth of 9.63%.
From 2010 to 2020, Seatac's population increased by 4,399 (16.29%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Seatac's population was lowest in year 2003 at 25,028.