ZIP Code 78588 — San Isidro CDP, TX Demographics & Data

ZIP code 78588 covers San Isidro, TX in Starr County with a population of about 246.

At a glance, the area shows median age of 41.5 versus a U.S. median of about 38.9.

It sits in telephone area code 956; U.S. House district TX-28; the HARLINGEN - WSLCO - BRNSVL - MCA media market.

Median household income in ZIP 78588 is about $86,458 — about 15% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 0.0%; unemployment rate near 0.0%; 27.9% of adults with a bachelor’s degree or higher (about 5.8 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Mining, and Public administration; a mean commute of about 72.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 74.6% (about 9.2 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for San Isidro CDP, TX as Relatively Moderate (composite score 84.8), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (84.9) and hurricane (78.8). 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 San Isidro CDP, TX show little to no average snow and around 19.8 inches of annual precipitation.

IRS migration statistics show a net inflow of about 12 for ZIP 78588 (San Isidro CDP, TX) 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.