ZIP Code 94597 — Walnut Creek city, CA Demographics & Data

ZIP code 94597 covers Walnut Creek, CA in Contra Costa County with a population of about 24,235.

At a glance, the area shows median age of 36.9 versus a U.S. median of about 38.9.

It sits in telephone area code 925; U.S. House district CA-10; the SAN FRANCISCO - OAK - SAN JOSE media market.

Walnut Creek, CA aligns with a tech / corporate-campus profile (high remote-work / education / income profile or known campus context). Broadband quality, remote-work share, and nearby employer campuses often matter as much as classic residential stats.

Median household income in ZIP 94597 is about $142,685 — about 90% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 7.6%; unemployment rate near 6.3%; 65.7% of adults with a bachelor’s degree or higher (about 32.0 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Healthcare, and Retail trade; about 24.4% of workers reporting work-from-home (about 9.2 points above 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 $986,700 — about 183% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,423 (about 108% above the U.S. median rent ($1,163)), and owner-occupancy near 46.4% (about 19.0 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 94597 in Walnut Creek, CA, a household would need roughly $272,000 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 $6,338. That is about 91% above the local median household income ($142,685), 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 Walnut Creek city, CA as Very High (composite score 99.5), which is among the highest nationally. The strongest component scores on US5 are flood (99.5) and wildfire (97.6). 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 Walnut Creek city, CA show little to no average snow and around 17.7 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,193 for ZIP 94597 (Walnut Creek city, CA) 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.