ZIP Code 93257 — Porterville city, CA Demographics & Data

ZIP code 93257 covers Porterville, CA in Tulare County with a population of about 79,340.

At a glance, the area shows median age of 30.9 versus a U.S. median of about 38.9.

It sits in telephone area code 559; U.S. House district CA-20; the FRESNO - VISALIA media market.

Median household income in ZIP 93257 is about $58,261 — about 22% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 19.6%; unemployment rate near 10.3%; 14.7% of adults with a bachelor’s degree or higher (about 19.0 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Agriculture, Healthcare, and Education; about 2.6% of workers reporting work-from-home (about 12.6 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 $276,400 — about 21% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $854 (about 27% below the U.S. median rent ($1,163)), and owner-occupancy near 55.5% (about 10.0 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 93257 in Porterville, CA, a household would need roughly $76,000 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 $1,776. That is about 30% above the local median household income ($58,261), 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 Porterville city, CA as Relatively High (composite score 97.0), which is among the highest nationally. The strongest component scores on US5 are flood (98.1) and wildfire (98.0). 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 Porterville city, CA show little to no average snow and around 11.0 inches of annual precipitation.

IRS migration statistics show a net inflow of about 3,904 for ZIP 93257 (Porterville 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.