King County · Washington
ZIP code 98103
- Population
- 51,988
- Median income
- $127,372
- Median home
- $1,012,900
- Sales tax
- 10.45%
ZCTA residents
Household, past 12 months
Owner-occupied value
Combined state + local
Quick answer
ZIP 98103 sits in King County, Washington and is home to 51,988 people. Median household income is $127,372, the median home is worth $1,012,900 and median gross rent is $2,006. 45.2% of households own their home, and purchases are taxed at 10.45% combined.
- County
- King County
- State
- Washington (WA)
- Area codes
- 206, 253, 360, 425
FIPS 53033
605 ZIPs covered
NANPA codes serving this area
The numbers for 98103
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 51,988ZIP 98103 residents
- Median household income
- $127,372Past 12 months, inflation adjusted
- Median home value
- $1,012,900Owner-occupied units
- Median gross rent
- $2,006Rent plus utilities, monthly
- Median age
- 34.7 yrsAll residents
- Homeownership rate
- 45.2%Owner-occupied households
Sales tax in 98103
What a purchase inside this ZIP costs at checkout.
This ZIP falls inside the Seattle rate area, so state, county, city and district levies are published here as a full stack.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 98103 compares
ZIP 98103 against the median ZIP in King County and across Washington.
| Measure | ZIP 98103 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $127,372 | $127,093 | $80,861 | +58% |
| Median home value | $1,012,900 | $803,200 | $421,200 | +140% |
| Median gross rent | $2,006 | $2,015 | $1,305 | +54% |
| Population | 51,988 | 26,487 | 4,632 | +1022% |
Medians are computed across the 86 ZIP areas in King County and the 605 ZIP areas in Washington.
Statewide rank
Where this ZIP places among all 605 Washington ZIP areas.
- Income
- #56
- Home value
- #22
- Population
- #14
richer than 90% of 556 state ZIPs
above 96% of 548 state ZIPs
larger than 98% of 605 state ZIPs
Comparable ZIP codes
Washington ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under King County.
ZIP 98103 questions
Common questions about this ZIP code.
- Where is ZIP code 98103?
- ZIP 98103 lies mostly in King County, Washington. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 98103?
- Purchases are taxed at 10.45% combined, built from the Seattle jurisdiction stack.
- Is 98103 expensive to live in?
- Median rent runs $2,006 a month, about 19% of median household income, and the median home is worth $1,012,900 — +140% against the typical Washington ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Washington State Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.