SeaTac, WA ZIP Codes
5 ZIP codes serve SeaTac, Washington: 98198, 98168, 98188, 98148 and 98158. Together they are home to 113,017 residents in 42,232 households. That is more than the 32,414 people counted inside SeaTac city limits, because these ZIP codes reach past its boundary. Median household income ranges from $76,438 in 98188 to $88,083 in 98168.
SeaTac city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 32,414 |
| Households | 12,134 |
| Median household income | $81,104 |
| Median home value | $519,700 |
| Median age | 36.8 |
| Median rent | $1,660 |
All 5 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 113,017 |
| Households (sum of ZIP codes) | 42,232 |
| Median household income, range across ZIP codes | $76,438 (98188) to $88,083 (98168) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $84,225 |
| Homeowners | 50.5% |
| Households with kids under 18 | 29.7% |
| Moved in the past year | 15.3% |
| Carrier routes in EDDM2GO's route library | 62 routes, 44,319 homes (5 of 5 ZIP codes) |
Top facts
- Highest median household income in SeaTac: 98168 ($88,083)
- Most residents: 98198 (40,463 people)
- Highest homeownership: 98198 (54.8% own their home)
- Most households with kids: 98168 (32.0% of households)
- Most new movers: 98148 (19.5% moved in last year)
- Youngest median age: 98198 (36.1 years)
- Highest median home value: 98148 ($607,900)
Every ZIP code in SeaTac
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 98198 | Seattle | 40,463 | 14,588 | $86,239 | $589,500 | 54.8% | 31.6% | 17.4% | 18 | 15,835 | 21% of its land |
| 98168 | Seattle | 35,528 | 12,260 | $88,083 | $548,000 | 53.8% | 32.0% | 11.8% | 19 | 13,874 | 16% of its land |
| 98188 | Seattle | 27,311 | 11,430 | $76,438 | $456,400 | 41.5% | 25.5% | 15.3% | 17 | 12,988 | 49% of its land |
| 98148 | Seattle | 9,715 | 3,954 | $87,342 | $607,900 | 50.5% | 28.1% | 19.5% | 7 | 5,007 | 34% of its land |
| 98158 | Seattle | 0 | 0 | — | — | — | — | — | 1 | 48 | 100% of its land |
A ZIP code is listed for SeaTac when at least 10% of its land lies inside SeaTac city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is SeaTac. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside SeaTac.
Counties
- King County — 88 ZIP codes
Nearby cities sharing these ZIP codes
- Seattle — 38 ZIP codes
- Des Moines — 2 ZIP codes
- Burien — 4 ZIP codes
- Tukwila — 4 ZIP codes
- White Center — 3 ZIP codes
EDDM service areas in SeaTac
Price a mailing to SeaTac ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in SeaTac, WA?
- 98198, 98168, 98188, 98148 and 98158. A ZIP code is listed for SeaTac when at least 10% of its land lies inside SeaTac city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is SeaTac.
- What is the population of SeaTac, WA?
- The Census Bureau counts 32,414 residents inside SeaTac city limits (ACS 2020–2024). The 5 ZIP codes that serve SeaTac hold 113,017 residents in all.
- What is the median household income in SeaTac, WA?
- $81,104 inside SeaTac city limits, per the Census Bureau. Across its ZIP codes the medians run from $76,438 to $88,083.
- Which SeaTac ZIP code has the highest median household income?
- 98168, at $88,083, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in SeaTac, WA?
- For the 5 of 5 ZIP codes in EDDM2GO's stored route library: 62 carrier routes reaching 44,319 residential and 3,433 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.