ZIP Code 99031

ZIP code 99031 is classified by USPS as a standard delivery area and covers roughly 183.4 square miles in Spangle, Spokane County, Washington. The area is home to 1,137 residents, producing a population density of 6 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 99031 against Washington and the nation.

On the economic side, the median household income for ZIP 99031 sits at $98,182 (8% above the Washington average), while per-capita income is $40,978. The poverty rate stands at 21.3% and the unemployment rate at 7.2%. On housing, the median home value is $423,500 (17% below the state average) with median rent at $1,183 per month, and 91.8% of occupied units are owner-occupied, a direct signal of whether 99031 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 26.3% of adults hold a bachelor's degree or higher, the median age is 47.1, and the average commute is —. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Spokane County, so you can benchmark 99031 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 →