Population 34,157 · Census ACS 2020–24
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Population and households in SeaTac
Household size in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 2.55 | 2.52 | 2.56 | 2.68 |
| 2010–14 | 2.73 | 2.59 | 2.62 | 2.73 |
| 2015–19 | 3.06 | 2.62 | 2.62 | 2.71 |
| 2020–24 | 2.74 | 2.60 | 2.61 | 2.65 |
| Change | +0.19 | +0.09 | +0.05 | −0.03 |
Households in SeaTac average 2.74 people, a bit above the national 2.65, so families with children are somewhat more common here. Household size has climbed from 2.55 in 2006–10, even as the national average fell. Households are largest in the northwest and smallest in the southwest.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 36.7 | 37.5 | 38.0 | 37.7 |
| 2010–14 | 36.1 | 38.1 | 38.7 | 38.6 |
| 2015–19 | 36.3 | 38.5 | 39.3 | 39.6 |
| 2020–24 | 37.0 | 38.8 | 39.6 | 40.1 |
| Change | +0.2 | +1.3 | +1.6 | +2.3 |
The median resident of SeaTac is 37.0 years old, a few years younger than the national median of 40.1. Residents skew youngest in the south and oldest in the northeast.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 12.9% | 10.3% | 10.9% | 12.3% |
| 2010–14 | 13.2% | 10.0% | 10.6% | 12.3% |
| 2015–19 | 11.2% | 9.2% | 10.1% | 11.6% |
| 2020–24 | 11.9% | 9.1% | 10.1% | 11.6% |
| Change | −1.0 pts | −1.2 pts | −0.8 pts | −0.6 pts |
Single parents head nearly one in eight households in SeaTac (11.9%), close to the national share of 11.6%. Single parents are more common here than in the Seattle area overall (9.1%). The single-parent share has edged down 1.0 points since 2006–10, in line with the national trend.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in SeaTac
Renters in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 46.5% | 37.7% | 35.2% | 33.3% |
| 2010–14 | 48.5% | 40.0% | 37.3% | 35.6% |
| 2015–19 | 51.2% | 39.9% | 37.0% | 36.0% |
| 2020–24 | 52.8% | 40.0% | 36.2% | 34.8% |
| Change | +6.3 pts | +2.3 pts | +1.0 pts | +1.5 pts |
Renters far outnumber owners in SeaTac: 52.8% of households rent their homes, against 34.8% nationally. Just over four in ten owners (41.6%) have paid off their mortgages, about the same as nationally. Since 2006–10, the renter share has risen 6.3 points, a much bigger shift than nationally. Only 12 of the 219 Washington cities with 5,000+ people have a higher share of renters.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 9.8% | 7.9% | 9.2% | 11.4% |
| 2010–14 | 6.6% | 7.8% | 9.2% | 11.4% |
| 2015–19 | 7.9% | 6.8% | 8.2% | 11.1% |
| 2020–24 | 7.8% | 6.6% | 7.6% | 9.6% |
| Change | −2.1 pts | −1.3 pts | −1.6 pts | −1.8 pts |
Fewer homes sit empty in SeaTac than nationally: 7.8%, against 9.6% for the U.S. That is in line with the rest of the Seattle area. Vacancy is down 2.1 points from 2006–10, in line with the national trend.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 1968 | 1977 | 1977 | 1974 |
| 2010–14 | 1970 | 1978 | 1979 | 1975 |
| 2015–19 | 1970 | 1980 | 1980 | 1977 |
| 2020–24 | 1977 | 1983 | 1984 | 1980 |
| Change | +8 | +7 | +6 | +6 |
Homes in SeaTac are about the same age as the nation's housing: the median home was built in 1977, versus 1980 nationally. Homes here are older than in the wider Seattle area, where the median home dates to 1983. The median year built has moved up from 1968 in 2006–10, a sign of steady new building. The newest homes are mostly in the southwest, the oldest in the northwest.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | $980 | $1,162 | $1,018 | $965 |
| 2010–14 | $1,099 | $1,284 | $1,127 | $1,040 |
| 2015–19 | $1,404 | $1,644 | $1,390 | $1,213 |
| 2020–24 | $1,779 | $2,193 | $1,875 | $1,571 |
| Change | +$799 | +$1,031 | +$858 | +$606 |
The median renter in SeaTac pays $1,779 a month for rent and utilities, above the national median of $1,571. Still, rents here are lower than in the Seattle area overall ($2,193). Rent has climbed $799 a month since 2006–10, up 82%, faster than rents rose nationally. Rent takes 34.4% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in SeaTac
Bachelor's degrees in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 16.2% | 36.7% | 31.0% | 28.4% |
| 2010–14 | 20.2% | 38.0% | 32.1% | 29.6% |
| 2015–19 | 22.9% | 42.3% | 35.5% | 32.1% |
| 2020–24 | 28.0% | 46.3% | 38.8% | 35.6% |
| Change | +11.8 pts | +9.6 pts | +7.8 pts | +7.2 pts |
Nearly three in ten adults 25 and older in SeaTac (28.0%) have a bachelor's degree or higher, below the national share of 35.6%. Since 2006–10, the share with a degree has risen 11.8 points, mirroring the country. College graduates are most concentrated in the northeast and least in the southwest.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 81.0% | 91.3% | 89.5% | 84.9% |
| 2010–14 | 82.4% | 91.6% | 90.0% | 86.1% |
| 2015–19 | 84.5% | 92.5% | 91.0% | 87.7% |
| 2020–24 | 84.9% | 93.1% | 91.9% | 89.3% |
| Change | +3.9 pts | +1.8 pts | +2.4 pts | +4.3 pts |
Just over one in seven adults in SeaTac never finished high school, more than nationally: 84.9% have a diploma or equivalent, against 89.3% across the U.S. The share with a diploma is up 3.9 points from 2006–10, mirroring the country. SeaTac has a lower share of high school graduates than at least four in five Washington cities.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in SeaTac
| Period | SeaTac | Seattle area | Washington | U.S. |
|---|---|---|---|---|
| 2006–10 | 6.4% | 6.9% | 7.6% | 8.1% |
| 2010–14 | 9.7% | 8.3% | 8.9% | 9.4% |
| 2015–19 | 5.9% | 4.5% | 5.1% | 5.6% |
| 2020–24 | 8.6% | 5.0% | 5.1% | 5.4% |
| Change | +2.2 pts | −2.0 pts | −2.5 pts | −2.7 pts |
Finding work has been harder in SeaTac: 8.6% of the labor force was out of work and looking, well above the national rate of 5.4%. Only 13 of the 219 Washington cities with 5,000+ people have higher unemployment. Unemployment is up 2.2 points from 2006–10, even as the national rate fell.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
SeaTac compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| SeaTac | 2.74 | 37.0 | 11.9% | 52.8% | 7.8% | 1977 | $1,779 | 28.0% | 84.9% | 8.6% |
| Tukwila | 2.66 | 34.9 | 12.8% | 59.3% | 6.7% | 1982 | $1,958 | 30.4% | 82.4% | 7.7% |
| Normandy Park | 2.58 | 45.3 | 4.0% | 19.1% | 9.7% | 1962 | $2,218 | 59.3% | 97.7% | 2.7% |
| Burien | 2.63 | 40.6 | 13.6% | 43.6% | 9.2% | 1966 | $1,968 | 34.6% | 86.7% | 6.9% |
| Des Moines | 2.88 | 37.8 | 14.0% | 39.9% | 5.5% | 1974 | $1,903 | 29.6% | 87.4% | 7.0% |
| Bryn Mawr-Skyway | 2.81 | 40.7 | 14.2% | 42.7% | 8.1% | 1971 | $2,050 | 34.5% | 87.1% | 7.0% |
| Boulevard Park | 2.93 | 31.1 | 23.0% | 53.2% | 14.7% | 1973 | $1,952 | 21.6% | 77.2% | 5.4% |
| White Center | 2.60 | 37.5 | 16.1% | 45.0% | 6.7% | 1977 | $1,721 | 32.8% | 85.5% | 4.4% |
| Kent | 2.92 | 35.8 | 12.2% | 48.2% | 6.9% | 1987 | $2,074 | 28.7% | 84.7% | 6.9% |
| East Hill-Meridian | 2.94 | 40.6 | 10.2% | 25.5% | 4.6% | 1984 | $2,227 | 34.0% | 90.0% | 5.7% |
| Renton | 2.65 | 38.3 | 11.2% | 45.9% | 6.3% | 1984 | $2,243 | 38.2% | 88.5% | 5.0% |
All figures 2020–24.
Cities with similar populations: Union City, GA · Eagle, ID · Eastpointe, MI · Fair Oaks, VA · Foley, AL · Foster City, CA · Granite City, IL · Greeneville, TN · Inman, SC · Leavenworth, KS
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up SeaTac. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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