SeaTac is a city in King County, Washington, home to about 32,414 people across 10 square miles. Its ZIP codes are 98158 and 98188, and parts of 98148, 98168 and 98198 are in SeaTac too.
Homes sold for a median of $323 per square foot in the three months ending August 2026, a seller’s market.
All in SeaTac
Mostly SeaTac; also Tukwila
Mostly Burien; part is in SeaTac
Mostly Burien; part is in SeaTac
Mostly Des Moines; part is in SeaTac
Each card is that ZIP code’s whole market, including any part outside SeaTac. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up SeaTac’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows SeaTac well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Seattle–Tacoma International Airport (SEA)1 mile away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA12 miles away |
Straight-line distances from the center of SeaTac; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
SeaTac had 31,454 residents in the 2020 census, up 23% since 2000.
It’s the 43rd largest of 628 towns in Washington by population.
King County grew from 110,053 residents in 1900 to 2,269,675 in 2020.
King County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 78°F in summer, and winter lows average 37°F. About 39.5 inches of rain and melted snow fall in a typical year, with about 6 inches of snow.
Source: NOAA 1991–2020 climate normals, Seattle Tacoma Intl Ap, WA weather station (about a mile away).
1,305,947 jobs at 70,376 businesses in King County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
706 doctors and other health care providers list an office in SeaTac’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 27 |
|---|---|
| Specialist doctors | 6 |
| Dentists | 60 |
| Nurse practitioners and physician assistants | 45 |
| Mental health providers | 517 |
| Physical and occupational therapists | 17 |
| Optometrists | 16 |
| Chiropractors | 18 |
| Pharmacies | 9 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (20 nearby)
Grocery stores (8 nearby)
Pharmacies (4 nearby)
Libraries (3 nearby)
Museums
Theaters and performance venues (1 nearby)
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1990.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Highline School District, Kent School District, Tukwila School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bow Lake ElementarySeaTac | Pre-K–5 | 524 | Public | 0.7 mi |
| Madrona ElementarySeaTac | Pre-K–5 | 317 | Public | 1.7 mi |
| McMicken Heights ElementarySeaTac | Pre-K–5 | 484 | Public | 0.8 mi |
| River Ridge ElementarySeaTac | Pre-K–5 | 697 | Public | 3.1 mi |
| Thorndyke ElementarySeattle | Pre-K–5 | 386 | Public | 1.8 mi |
| Valley View Early Childhood CenterSeaTac | Pre-K | 225 | Public | 1.0 mi |
| Chinook Middle SchoolSeaTac | 6–8 | 620 | Public | 1.0 mi |
| Glacier Middle SchoolSeaTac | 6–8 | 803 | Public | 2.3 mi |
| Tyee High SchoolSeaTac | 9–12 | 644 | Public | 1.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Hope Christian AcademySeatac | K–10 | 14 | Assembly of God | 1.3 mi |
| Seattle Christian SchoolsSeatac | K–12 | 606 | Christian (no specific denomination) | 1.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Des Moines, Burien, Tukwila, White Center and Boulevard Park.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.