US location post office
ZIP Code 78588
- Zip Code: 78588
- Type: Standard
- Official USPS city name: San Isidro
- Official USPS State Code: TX
- Official State Name: Texas
- ZCTA: TRUE
- Population: 133.0
- Density: 1.3
- Primary Official County Code: 48427
- Primary Official County Name: Starr
- Official County Name: Starr
- Official County Code: 48427
- Imprecise: FALSE
- Military: FALSE
- Timezone: America/Chicago (20:38 PM Sunday, July 27 2025-07-27 (GMT -0500))
- Geo Point: 26.73785, -98.39723
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