ZIP Code 98188

ZIP code 98188 is classified by USPS as a standard delivery area and covers roughly 19.5 square miles in Seattle, King County, Washington. The area is home to 23,111 residents, producing a population density of 1,185 people per square mile, and falls within the Los Angeles time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 98188 against Washington and the nation.

On the economic side, the median household income for ZIP 98188 sits at $76,438 (16% below the Washington average), while per-capita income is $41,508. The poverty rate stands at 8.5% and the unemployment rate at 7.0%. On housing, the median home value is $456,400 (11% below the state average) with median rent at $1,678 per month, and 41.5% of occupied units are owner-occupied, a direct signal of whether 98188 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 28.1% of adults hold a bachelor's degree or higher, the median age is 37.5, and the average commute is 24 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing King County, so you can benchmark 98188 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →