ZIP Code 98038

ZIP code 98038 is classified by USPS as a standard delivery area and covers roughly 172.2 square miles in Maple Valley, King County, Washington. The area is home to 31,171 residents, producing a population density of 181 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 98038 against Washington and the nation.

On the economic side, the median household income for ZIP 98038 sits at $152,261 (67% above the Washington average), while per-capita income is $57,730. The poverty rate stands at 5.2% and the unemployment rate at 4.1%. On housing, the median home value is $776,900 (52% above the state average) with median rent at $2,316 per month, and 85.6% of occupied units are owner-occupied, a direct signal of whether 98038 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 49.0% of adults hold a bachelor's degree or higher, the median age is 38.5, and the average commute is 37 minutes. We also surface 5 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing King County, so you can benchmark 98038 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 →