ZIP Code 91931 — undefined, CA Demographics & Data

ZIP code 91931 covers CA in San Diego County with a population of about 735.

At a glance, the area shows median age of 40.0 (near the U.S. median).

It sits in telephone area codes 619, 858; U.S. House district CA-48; the SAN DIEGO media market.

Median household income in ZIP 91931 is about $49,808 — about 34% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 7.8%; unemployment rate near 7.6%; 19.9% of adults with a bachelor’s degree or higher (about 13.9 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Retail trade, and Healthcare; a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 78.2% (about 12.8 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for CA as Very High (composite score 99.7), which is among the highest nationally. The strongest component scores on US5 are wildfire (100.0) and flood (99.7). 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 17.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 36 for ZIP 91931 (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.