Census 2010: Washington › SeaTac

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Square miles: 10.2 Population per sq. mile: 2,682.9

  • 2010 population: 26,909
  • 2000 population: 25,496
  • Total change: 1,413 (5.5%)

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2010 population by race/ethnicity

Diversity Index: 77.3%
The USA TODAY Diversity Index represents the probability that two people from this area will have different ethnic backgrounds. A higher number reflects a more ethnically diverse population.

Age breakdown Median: 34.5 years old

SeaTac population

Race/ethnicity2010 population2010 percentage2000 population2000 percentage2000-2010 change
American Indian/Alaska Native3991.5%3821.5%4.5%
Native Hawaiian/Pacific Islander9583.6%6772.7%41.5%
Other race3,13111.6%1,6346.4%91.6%
Two or more races1,6176.0%1,6206.4%-0.2%
*Hispanic origin5,47420.3%3,30213.0%65.8%

*Residents of Hispanic origin can be of any race.

Ages 0-17

Population: 6,213 (23.1%)

Diversity Index: 89.4%

Ages 18+

Population: 20,696 (76.9%)

Diversity Index: 77.5%

Race/ethnicityAges 0-17% of 0-17 totalAges 18+% of 18+ total
American Indian/Alaska Native891.4%3101.5%
Native Hawaiian/Pacific Islander3275.3%6313.0%
Other race1,07517.3%2,0569.9%
Two or more races70411.3%9134.4%
*Hispanic origin1,91630.8%3,55817.2%

*Residents of Hispanic origin can be of any race.

Population14,104 (52.4%)
Median age34.4
Population12,805 (47.6%)
Median age34.8
Age breakdown by gender
AgePopulation% of totalMale% of male totalFemale% of female total
Under 103,71513.8%1,83213.0%1,88314.7%
10 to 19 years3,18611.8%1,66311.8%1,52311.9%
20 to 29 years4,53616.9%2,49317.7%2,04316.0%
30 to 39 years4,23915.8%2,32916.5%1,91014.9%
40 to 49 years3,84314.3%2,12315.1%1,72013.4%
50 to 59 years3,54713.2%1,86513.2%1,68213.1%
60 to 69 years2,1057.8%1,0717.6%1,0348.1%
70 to 79 years1,0603.9%4843.4%5764.5%
80 and older6782.5%2441.7%4343.4%

*Residents of Hispanic origin can be of any race.

Household types
Families 2010
Avg. size 3.4
Households 5,913 (62.0%)
Non-families 2010
Avg. size 2.7
Households 3,620 (38.0%)
Family composition
Households ‡ 2010 % of households % of families
Husband-wife family, without children 2,107 22.1% ...
Husband-wife family, with children under 18 years 1,763 18.5% ...
Single male, no children (with other family) 421 4.4% ...
Single male, with children under 18 years 286 3.0% ...
Single female, no children (with other family) 633 6.6% ...
Single female, with children under 18 years 703 7.4% ...
Single male living alone 1,535 16.1% n/a
Single female living alone 1,213 12.7% n/a
Other non-family households (ex.: roommates) 872 9.1% n/a
Total 9,533 100% n/a
Family households 5,913 62.0% 100%
Families with children under 18 years 2,752 28.9% ...
Non-family households 3,620 38.0% n/a
All households with individuals 65 years and over 1,988 20.9% n/a

‡ United States Census Bureau definitions:

Household — A household includes all of the people who occupy a housing unit. People not living in households are classified as living in group quarters. (Ex: college residence halls, skilled-nursing facilities, military barracks, …)
Family — A family includes a householder and one or more people living in the same household who are related to the householder by birth, marriage, or adoption.
Non-family Household — A householder living alone or with nonrelatives only.

Note: Family households and husband-wife-couple families do not include same-sex married couples even if the marriage was performed in a state issuing marriage certificates for same-sex couples. Same-sex-couple households are included in the family households category if there is at least one additional person related to the householder by birth or adoption. Same-sex-couple households with no relatives of the householder present are tabulated in nonfamily households.

Housing Units
Avg. household size2.7
Avg. household size2.7
Vacancy Rate2010
Owner-occupied properties3%
Renter-occupied properties8.2%
Overall vacancy rate8.0%
Housing Units2010% of total
Vacant827 8.0%
For rent4093.9%
Rented, but unoccupied480.5%
For sale1581.5%
Sold, but unoccupied160.2%
Seasonal use only580.6%
Other vacant units1381.3%

Credits: Ryan Pitts, Mike Tigas Special thanks: USA Today Census team