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King County · Washington

ZIP code 98107

Population, income, housing costs and the sales tax rate charged on purchases inside ZIP 98107 — Census 2019-2023 ACS 5-year, no modelled estimates.
Population
28,390

ZCTA residents

Median income
$137,748

Household, past 12 months

Median home
$924,900

Owner-occupied value

Sales tax
10.45%

Combined state + local

Quick answer

ZIP 98107 sits in King County, Washington and is home to 28,390 people. Median household income is $137,748, the median home is worth $924,900 and median gross rent is $2,194. 39.4% of households own their home, and purchases are taxed at 10.45% combined.

County
King County

FIPS 53033

State
Washington (WA)

605 ZIPs covered

Area codes
206, 253, 360, 425

NANPA codes serving this area

Metro area
Seattle

Rate jurisdiction used for tax

The numbers for 98107

American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.

Population
28,390ZIP 98107 residents
Median household income
$137,748Past 12 months, inflation adjusted
Median home value
$924,900Owner-occupied units
Median gross rent
$2,194Rent plus utilities, monthly
Median age
33.8 yrsAll residents
Homeownership rate
39.4%Owner-occupied households

ZIP 98107 in context

How this area compares with national benchmarks.

ZIP 98107 is a small city in King County, Washington, with 28,390 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #106 of 605 ranked by population — larger than 82% of them. The median age here is 33.8 years against 39.1 nationally, a slightly younger profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in ZIP 98107 earn a median of $137,748 a year, 75.4% above the national figure of $78,538. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 5.4% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 98107 is valued at $924,900, 204.8% above the national figure, while median gross rent runs $2,194 a month, 56% above the national figure, or roughly $26,328 across a full year. A household on the local median income would put about 19.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 6.7×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 39.4% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Home values sit at 6.7× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

Reading ZIP 98107 in context

How 98107 sits inside King County and Washington.

ZIP 98107 is tabulated inside King County, Washington, one of 86 ZIP areas the Census publishes for that county and 605 across Washington. This is a mid-sized suburban ZIP inside a county that is split across many delivery areas. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 98107 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 98107 reports a median household income of $137,748, 8% above the $127,093 county median, and 70% above the $80,861 typical WA ZIP. Owner-occupied homes are valued at a median of $924,900, 15% above the county figure and 120% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $2,194 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

A taxable purchase made inside 98107 carries 10.45% at the register, assembled from the Seattle jurisdiction stack: the Washington state rate plus every county, municipal and special district levy that reaches this address. Because those district boundaries were drawn for schools, transit and hospital funding rather than for mail delivery, two addresses inside 98107 can legitimately fall under different totals — the rate shown here is the one that applies to the dominant jurisdiction.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 98107 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.

Sales tax in 98107

What a purchase inside this ZIP costs at checkout.

Rate applied
10.45%Seattle jurisdiction stack
Tax on $100
$10Rounded to the dollar
Tax on $1,000
$105Before any exemptions

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.

Rent burden
19%Median rent ÷ median income
Price-to-income
6.7×Home value ÷ household income
Est. mortgage
$4,799/mo20% down, 30-yr at 6.75%
Poverty rate
5.4%Residents below poverty line

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 98107 compares

ZIP 98107 against the median ZIP in King County and across Washington.

MeasureZIP 98107County medianState medianvs state
Median household income$137,748$127,093$80,861+70%
Median home value$924,900$803,200$421,200+120%
Median gross rent$2,194$2,015$1,305+68%
Population28,39026,4874,632+513%

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

richer than 93% of 556 state ZIPs

#41
Home value

above 94% of 548 state ZIPs

#34
Population

larger than 82% of 605 state ZIPs

#106

Comparable ZIP codes

Washington ZIP areas with almost the same household income.

ZIPCountyIncomeHome valueRent
98028King County$137,926$869,800$1,944
99330Franklin County$135,648$292,100—
98059King County$134,336$809,800$2,230
98012Snohomish County$141,653$811,500$2,279
98385Pierce County$132,750$490,000—
98220Whatcom County$142,891$460,900—

Nearby ZIP codes

Other ZIP codes filed under King County.

Adjacent ZIP Codes

Other ZIP codes in King County, Washington.

ZIP 98107 questions

Common questions about this ZIP code.

Where is ZIP code 98107?
ZIP 98107 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 98107?
Purchases are taxed at 10.45% combined, built from the Seattle jurisdiction stack.
Is 98107 expensive to live in?
Median rent runs $2,194 a month, about 19% of median household income, and the median home is worth $924,900 — +120% 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.

Related pages for this area.

Sources & transparency

Every figure on this page is a published estimate for ZIP Code Tabulation Area 98107, except the affordability ratios and mortgage estimate, which we derive from those medians and label as estimates.

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.