ZIP Code 99346

ZIP code 99346 is classified by USPS as a standard delivery area and covers roughly 320.0 square miles in Plymouth, Benton County, Washington. The area is home to 352 residents, producing a population density of 1 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 99346 against Washington and the nation.

On the economic side, the median household income for ZIP 99346 sits at $50,865 (44% below the Washington average), while per-capita income is $28,424. The poverty rate stands at 8.6% and the unemployment rate at 0.0%. On housing, the median home value is $209,200 (59% below the state average) with median rent at — per month, and 94.7% of occupied units are owner-occupied, a direct signal of whether 99346 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 16.7% of adults hold a bachelor's degree or higher, the median age is 55.8, and the average commute is —. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Benton County, so you can benchmark 99346 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 →