SeaTac, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of SeaTac, Washington is 31,143 as of the 2023 American Community Survey, making it the 44th-largest city in Washington. The median household income is $76,517, the median home value is $483,200, and the median age is 36.8.
The population has grown 26.0% since 2010 (26,998 → 34,024).
31,143
Population
3094
People / sq mi
$76,517
Median Income
$483,200
Median Home Value
SeaTac covers 10.1 sq mi of land at 3094 people per square mile.
About SeaTac, WA
SeaTac is a city in Washington with a population of 31,143. It ranks #44 among cities in Washington by population. The median age is 36.8, younger than the national median. The population is 54.7% male and 45.3% female.
The median household income in SeaTac is $76,517, near the US median of $74,580. 8.4% of residents live below the federal poverty level. Home values sit at a median of $483,200, with monthly rent averaging $1,637. The homeownership rate of 45.1% is lower than the national rate of 64.8%.
Educational attainment in SeaTac reflects 26.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 10.8% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 25.6 minutes each way.
SeaTac city Population History (2010-2024)
The city of SeaTac city had a population of 26,998 in 2010 and 34,024 in 2024, a 26.0% growth over 14 years. The peak was 34,024 in 2024. Average annual growth rate: 1.69%.
34,024
Population (2024)
26,998
Population (2010)
34,024
Peak (2024)
1.69%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 26,998 |
| 2011 | 27,548 |
| 2012 | 27,959 |
| 2013 | 28,136 |
| 2014 | 28,343 |
| 2015 | 28,513 |
| 2016 | 29,136 |
| 2017 | 29,292 |
| 2018 | 29,121 |
| 2019 | 29,044 |
| 2020 | 31,387 |
| 2021 | 31,597 |
| 2022 | 32,012 |
| 2023 | 33,152 |
| 2024 | 34,024 |
Race & Ethnicity
| White | 31.2% |
| Black or African American | 24.3% |
| Asian | 0.1% |
| Hispanic or Latino (any race) | 2.0% |
| Two or More Races | 0.0% |
Economy & Income
$76,517
Median Household Income
$37,207
Per Capita Income
8.4%
Poverty Rate
5.8%
Unemployment Rate
Housing
$483,200
Median Home Value
$1,637
Median Rent
45.1%
Owner-Occupied
Education
83.9%
High School+
26.6%
Bachelor's+
Commute
6.9%
Drive Alone
60.0%
Public Transit
10.8%
Work From Home
25.6 min
Avg Commute
Community Profile
22.3%
Foreign Born
49.3%
Non-English at Home
5.4%
Veterans
13.0%
With Disability
89.2%
Health Insurance
96.2%
Internet Access
Employment by Industry
| Retail Trade | 15.4% |
| Finance, Insurance & Real Estate | 14.2% |
| Professional, Scientific & Management | 13.6% |
| Education, Health Care & Social Services | 12.8% |
| Manufacturing | 9.6% |
| Construction | 7.6% |
| Information | 6.1% |
| Arts, Entertainment & Food Services | 3.4% |
| Public Administration | 2.6% |
| Transportation & Warehousing | 1.4% |
| Agriculture & Mining | 0.3% |
Largest cities in Washington
Largest counties in Washington
Part of Washington
Metro areas in Washington
City rankings
Frequently Asked Questions
SeaTac, Washington has a population of 31,143 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 44th-largest city in Washington.
The median household income in SeaTac, Washington is $76,517, with 8.4% of residents living below the federal poverty level.
The median home value in SeaTac, Washington is $483,200, with median monthly rent at $1,637 and a homeownership rate of 45.1%.
The median age in SeaTac, Washington is 36.8 years. The population is 54.7% male and 45.3% female.
The population has grown 26.0% since 2010 (26,998 → 34,024).
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Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.