ZIP Code 98603 — undefined, WA Demographics & Data

ZIP code 98603 covers WA in Cowlitz County with a population of about 1,192.

At a glance, the area shows median age of 41.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 360, 564; U.S. House district WA-3; the PORTLAND, OR media market.

Median household income in ZIP 98603 is about $77,188 — about 3% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 17.9%; unemployment rate near 0.0%; 14.6% of adults with a bachelor’s degree or higher (about 19.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Food services, Construction, and Transportation; about 14.6% of workers reporting work-from-home (roughly in line with the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $368,800 — about 6% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $562 (about 52% below the U.S. median rent ($1,163)), and owner-occupancy near 66.9% (about 1.5 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 98603 in WA, a household would need roughly $102,000 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 $2,369. That is about 32% above the local median household income ($77,188), so the median earner would likely stretch or need a larger down payment. 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 WA as Relatively Moderate (composite score 90.3), which is among the highest nationally. The strongest component scores on US5 are flood (88.3) and wildfire (61.3). 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 WA show little to no average snow and around 115.3 inches of annual precipitation.

IRS migration statistics show a net inflow of about 64 for ZIP 98603 (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.