ZIP Code 78591 — Santa Anna CDP, TX Demographics & Data

ZIP code 78591 covers Santa Anna, TX in Starr County with a population of about 163.

At a glance, the area shows median age of 48.8 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 78591 is about $33,188 — about 56% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 29.4%; unemployment rate near 0.0%; 25.6% of adults with a bachelor’s degree or higher (about 8.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Agriculture, and Administrative support; a mean commute of about 68.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 87.3% (about 21.9 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Santa Anna 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 Santa Anna CDP, TX show little to no average snow and around 20.2 inches of annual precipitation.

IRS migration statistics show a net inflow of about 8 for ZIP 78591 (Santa Anna 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.