ZIP Code 99135 — Hartline town, WA Demographics & Data

ZIP code 99135 covers Hartline, WA in Grant County with a population of about 441.

At a glance, the area shows median age of 35.5 versus a U.S. median of about 38.9.

It sits in telephone area code 509; U.S. House district WA-4; the SPOKANE media market.

Median household income in ZIP 99135 is about $86,667 — about 15% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 2.7%; unemployment rate near 0.0%; 21.7% of adults with a bachelor’s degree or higher (about 12.0 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Agriculture, Food services, and Construction; about 30.2% of workers reporting work-from-home (about 15.0 points above the U.S. share (15.2%)); a mean commute of about 125.0 minutes (U.S. average near 26.8).

Median home value is about $198,000 — about 43% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $410 (about 65% below the U.S. median rent ($1,163)), and owner-occupancy near 91.3% (about 25.9 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 99135 in Hartline, WA, a household would need roughly $55,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,272. That sits below the local median household income ($86,667), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Hartline town, WA as Relatively Low (composite score 76.9), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (95.8) and flood (77.2). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Hartline town, WA show little to no average snow and around 10.9 inches of annual precipitation.

IRS migration statistics show a net inflow of about 24 for ZIP 99135 (Hartline town, WA) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.