ZIP Code 92377 — Rialto city, CA Demographics & Data

ZIP code 92377 covers Rialto, CA in San Bernardino County with a population of about 21,685.

At a glance, the area shows median age of 34.7 versus a U.S. median of about 38.9.

It sits in telephone area codes 840, 909; U.S. House district CA-33; the LOS ANGELES media market.

Rialto, CA sits in a university / college context (near oak valley college (0.9 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

Median household income in ZIP 92377 is about $111,088 — about 48% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 10.4%; unemployment rate near 6.9%; 22.5% of adults with a bachelor’s degree or higher (about 11.2 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Transportation, and Retail trade; about 9.0% of workers reporting work-from-home (about 6.2 points below 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 $553,800 — about 59% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,050 (about 76% above the U.S. median rent ($1,163)), and owner-occupancy near 86.6% (about 21.2 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 92377 in Rialto, CA, a household would need roughly $152,000 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 $3,557. That is about 37% above the local median household income ($111,088), 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 Rialto city, CA as Very High (composite score 99.8), which is among the highest nationally. The strongest component scores on US5 are wildfire (99.9) and flood (99.8). 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 Rialto city, CA show little to no average snow and around 11.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,067 for ZIP 92377 (Rialto 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.