San Isidro, TX ZIP code
The ZIP code for San Isidro, Texas is 78588. It is in Starr County.
- Population in these ZIPs
- 289
- Avg. median income
- $94,800population-weighted
- Typical home value
- $52,800population-weighted
- Metro area
- Rio Grande City-Roma, TX
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San Isidro, TX ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 78588 | 289 | $94,821 | $52,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near San Isidro
- Delmita 7 mi
- Linn 10 mi
- Santa Elena 12 mi
- Encino 14 mi
- Rio Grande City 26 mi
- Edinburg 27 mi
- Hargill 29 mi
- Penitas 29 mi
- Hebbronville 31 mi
- Sullivan City 31 mi
- Mission 33 mi
- Falfurrias 33 mi
Frequently asked questions
What is the ZIP code for San Isidro, TX?
The ZIP code for San Isidro, TX is 78588.
What county is San Isidro, Texas in?
San Isidro ZIP codes are in Starr County.