ZIP Code 98555

ZIP code 98555 is classified by USPS as a standard delivery area and covers roughly 53.0 square miles in Lilliwaup, Mason County, Washington. The area is home to 599 residents, producing a population density of 11 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 98555 against Washington and the nation.

On the economic side, the median household income for ZIP 98555 sits at —, while per-capita income is $55,077. The poverty rate stands at 16.7% and the unemployment rate at 0.0%. On housing, the median home value is $462,500 (10% below the state average) with median rent at — per month, and 76.4% of occupied units are owner-occupied, a direct signal of whether 98555 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 36.3% of adults hold a bachelor's degree or higher, the median age is 67.2, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Mason County, so you can benchmark 98555 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 →