ZIP Code 78591

ZIP code 78591 is classified by USPS as a standard delivery area and covers roughly 331.3 square miles in Santa Elena, Starr County, Texas. The area is home to 265 residents, producing a population density of 1 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 78591 against Texas and the nation.

On the economic side, the median household income for ZIP 78591 sits at $35,750 (53% below the Texas average), while per-capita income is $31,329. The poverty rate stands at 28.5% and the unemployment rate at 0.0%. On housing, the median home value is — with median rent at — per month, and 89.5% of occupied units are owner-occupied, a direct signal of whether 78591 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 20.0% of adults hold a bachelor's degree or higher, the median age is 56.1, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Starr County, so you can benchmark 78591 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →