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ZIP Code 98188
SeaTac, WA, King County
Population
27,311
Land area
8.1sq mi
People per sq mi
3,386
City
SeaTac
ZIP 98188 and nearby ZIP codes
ZIP 98188 at a glance
- ZIP 98188 (SeaTac) is about 29 times as dense as Washington as a whole.
- The median household income is $76,438, 22% below the Washington median of $98,141.
- A typical owner-occupied home is valued at $456,400 (19% below Washington) and median rent is $1,678 a month.
Local data for ZIP 98188
Counts from official public data
Housing and community stats
ZIP 98188, American Community Survey 2020-2024
Median household income
$76,438
Poverty rate
8.5%
Median home value
$456,400
Prices +2.9% in a year
Median rent
$1,678/mo
Homeownership
41.5%
Bachelor's or higher
28.1%
Median age
37.5
Average commute
24.2 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
1,496
ZIP Business Patterns 2023
Employees
43,850
$2.7B annual payroll
PPP loans
$188M
2,095 loans
Campaign donations
$104K
28% D, 14% R, 2026 cycle
Environment and hazard risk
ZIP 98188, from FEMA, NOAA and EPA
Natural hazard risk
Very High
Top: earthquake
Storm events since 1996
75
Countywide, mostly lightning
Flood insurance policies
4,529
0.8% of homes, county
July high / Jan low
77° / 38°F
39.3 inches of rain a year
Health statistics
Share of adults in ZIP 98188, CDC PLACES estimates
Obesity
27.5%
U.S. 33.3% -5.8 pts
Diabetes
9.7%
U.S. 12.1% -2.4 pts
Smoking
10.6%
U.S. 12.8% -2.2 pts
Uninsured (18-64)
11.0%
U.S. 11.1% about the same
Frequently asked questions
- What city is ZIP code 98188?
- ZIP code 98188 is in SeaTac, WA (King County).
- What county is ZIP code 98188 in?
- ZIP code 98188 is mostly in King County, Washington.
- How many people live in ZIP code 98188?
- About 27,311 people live in the 98188 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.