ZIP Code 95431 — undefined, CA Demographics & Data

ZIP code 95431 covers CA in Sonoma County with a population of about 47.

At a glance, the area shows median age of 57.6 versus a U.S. median of about 38.9.

It sits in telephone area codes 369, 707; U.S. House district CA-4; the SAN FRANCISCO - OAK - SAN JOSE media market.

CA fits a retirement-oriented profile (older median age or known retirement-community context). Residents and relocators commonly research healthcare access, everyday amenities (dining, personal services), and housing costs rather than tech or campus life.

FEMA’s National Risk Index rates natural-hazard risk for CA as Relatively High (composite score 99.1), which is among the highest nationally. The strongest component scores on US5 are flood (99.2) and wildfire (98.2). 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 CA show little to no average snow and around 28.4 inches of annual precipitation.

IRS migration statistics show a net inflow of about 2 for ZIP 95431 (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.