SeaTac, WA Demographics

What is the population of Seatac?

There are 31,143 residents in Seatac, with a median age of 36. Of this, 54.72% are males and 45.28% are females. US-born citizens make up 57.31% of the resident pool in Seatac, while non-US-born citizens account for 23.42%. Additionally, 19.27% of the population is represented by non-citizens. A total of 24,942 people in Seatac currently live in the same house as they did last year.
Y-o-Y Change
Total Population 31,143 0.7%
Male Population 17,040 1.7%
Female Population 14,103 -0.5%
Male Population 54.72%
Female Population 45.28%
Y-o-Y Change
Median Age 36 -0.3%
Citizen U.S. Born 17,849 -0.9%
Citizen not U.S. Born 7,294 -0.2%
Not Citizen 6,000 7.0%
Citizen U.S. Born 57.31%
Citizen not U.S. Born 23.42%
Not Citizen 19.27%
Y-o-Y Change
Moved from Abroad 50 -74.0%
Moved from Same County 4,465 9.0%
Moved from Same State 635 -10.7%
Moved from Different State 556 -21.0%
Same House as Last Year 24,942 0.4%
Moved from Abroad 0.16%
Moved from Same County 14.57%
Moved from Same State 2.07%
Moved from Different State 1.81%
Same House as Last Year 81.38%

What are the employment statistics in Seatac?

White-collar workers make up 70.34% of the working population in Seatac, while blue-collar employees account for 29.66%. There are also 3,480 entrepreneurs in Seatac (11.21% of the workforce); 21,752 workers employed in private companies (70.07%); and 3,642 people working in governmental institutions (11.73%).
Y-o-Y Change
White Collar 21,836 92.3%
Blue Collar 9,208 95.8%
White Collar 70.34%
Blue Collar 29.66%
Y-o-Y Change
Self Employees 3,480 131.1%
Private Companies 21,752 90.6%
Governmental Workers 3,642 83.4%
Not for Profit Companies 2,170 88.2%
Self Employees 11.21%
Private Companies 70.07%
Governmental Workers 11.73%
Not for Profit Companies 6.99%

How many households are there in Seatac?

There are a total of 11,772 households in Seatac, each made up of around 2 members. Family establishments represent 59.85% of these Seatac households, while non-family units account for the remaining 40.15%. Additionally, 30.89% of households have children and 69.11% of households are without children.
Y-o-Y Change
Total households 11,772 3.1%
Average People per Household 2 -23.9%
Family Households 7,046 1.7%
Non-Family Households 4,726 5.3%
Family Households 59.85%
Non-Family Households 40.15%
Y-o-Y Change
Households with Children 3,636 4.4%
Households without Children 8,136 2.6%
Households with Children 30.89%
Households without Children 69.11%

What are the median and average incomes in Seatac?

The average annual household income in Seatac is $94,717, while the median household income sits at $76,517 per year. Residents aged 25 to 44 earn $64,515, while those between 45 and 64 years old have a median wage of $99,370. In contrast, people younger than 25 and those older than 65 earn less, at $70,750 and $56,744, respectively.
Y-o-Y Change
Average Household Income $94,717 0.5%
Median Household Income $76,517 -3.7%
People below Poverty Level 3,120 -7.4%
People above Poverty Level 26,807 1.4%

How many homeowners and renters are there in Seatac?

There are 12,424 housing units in Seatac, and the median year in which these properties were built is 1971. Of the 11,772 occupied housing units in Seatac, 45.06% are owner-occupied, while 54.94% have renters living in them. Meanwhile, properties bought with mortgages account for 64.86% of the units, and the median value of a home with a mortgage is $493,900. In general, housing costs reach $1,701 per month in Seatac.
Y-o-Y Change
Housing Units 12,424 4.0%
Median Year Built 1971 0.1%
Built in 1939 or Earlier 563 17.3%
Built between 1940 and 1949 825 -7.2%
Built between 1950 and 1959 1,797 -2.2%
Built between 1960 and 1969 2,814 -1.6%
Built between 1970 and 1979 1,943 4.6%
Built between 1980 and 1989 1,577 0.8%
Built between 1990 and 1999 616 7.7%
Built between 2000 and 2009 1,029 -2.0%
Built between 2010 and 2019 1,066 34.4%
Built in 2020 or Later 194 410.5%
Y-o-Y Change
Occupied Housing Units 11,772 3.1%
Owner Occupied 5,304 -0.8%
Renter Occupied 6,468 6.6%
Owner Occupied 45.06%
Renter Occupied 54.94%
Y-o-Y Change
With Mortgage 3,440 -6.5%
Without Mortgage 1,864 11.6%
Median Value with Mortgage $493,900 8.8%
Median Value without Mortgage $452,700 5.0%
Median Housing Costs per Month $1,701 3.3%
With Mortgage 64.86%
Without Mortgage 35.14%

What is the level of education in Seatac?

Approximately 36.7% of the population in Seatac holds a high school degree (that's 8,746 residents), while 22.08% have attained a college certificate (5,262 locals) and 18.97% have a bachelor's degree (4,521 people).
Y-o-Y Change
No High School 1,839 7.2%
Some High School 8,746 0.3%
Some College 5,262 -19.9%
Associate Degree 2,032 0.7%
Bachelor's Degree 4,521 2.7%
Graduate Degree 1,429 3.1%
No High School 7.72%
Some High School 36.7%
Some College 22.08%
Associate Degree 8.53%
Bachelor's Degree 18.97%
Graduate Degree 6%

What is the marital status of Seatac residents?

A total of 9,382 people in Seatac have never been married (which represents 37.75% of the total population), while 11,842 of them are wedded (47.65%). Separated and divorced residents are in smaller numbers, at 358 (1.44%) and 2,501 (10.06%), respectively.
Y-o-Y Change
Never Married 9,382 2.9%
Married 11,842 -1.1%
Separated 358 -18.1%
Widowed 1,126 4.7%
Divorced 2,501 -6.8%
Never Married 37.75%
Married 47.65%
Separated 1.44%
Widowed 4.53%
Divorced 10.06%

What are the most common means of transportation in Seatac?

The top three means of transportation people in Seatac use to get to work are: car, walking and bus or trolley bus. A total of 11,278 residents commute by car, 646 prefer going to work by walking and 451 by bus or trolley bus
Y-o-Y Change
Car 11,278 -2.8%
Bus or TrolleyBus 451 -1.3%
Subway or Elevated 50 N/A
Railroad 50 -29.6%
Motorcycle 26 -27.8%
TaxiCab 74 131.2%
Walk 646 -15.0%

What is the median and average household income in Seatac by zipcode?

ZipCode Population Number of Households Median Income Average Income
98148 10,399 4,050 $86,994 $115,170
98168 34,814 12,503 $84,937 $106,199
98188 26,769 11,208 $76,559 $95,322
98198 39,815 14,494 $83,938 $107,473

Methodology & Disclaimers

Demographic data shown in this section was gathered from the latest U.S. Census Bureau release, the 2023 American Community Survey. The information is updated yearly, as soon as new data is made available by the US Census Bureau.
No representation, guarantee or warranty is made as to the accuracy or completeness of information modified or aggregated for specific neighborhoods and/or zip codes.