Zip Code 78591 — Santa Elena, TX
78591 is a ZIP Code associated with Santa Elena, TX, located within Starr. 78591 ranks #7 out of 8 ZIP codes in Starr County by population (and #1777 out of 1,990 in TX). The area supports an estimated population of 158 residents across Data Pending housing units, with a population density of 0.3 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (26.653510, -98.534080)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 78591 |
| Primary City | Santa Elena |
| State / Province | TX |
| County | Starr |
| Total Population | 158 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 0.3 people/sq mi |
| Timezone | America/Chicago |
How 78591 Compares
| Metric | ZIP 78591 | Starr County | TX State Average |
|---|
| Population | 158 | 65,670 (Total) | 30,188,035 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 0.3 /sq mi | -- | -- |
| County Pop Rank | #7 of 8 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →