Census place · GEOID 4865432 · Starr County
San Isidro, TX ZIP codes
2 ZIP/ZCTAs intersecting this Census place (CDP) in Starr County.
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place San Isidro (GEOID 4865432). Methodology
Combined population of ZIP/ZCTAs intersecting this place: 591 (2 ZIPs).
Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology
Map of San Isidro, TX

ZIP/ZCTA overlap with San Isidro
Population overlap
Share of each ZIP/ZCTA’s population located within San Isidro, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
ZIP codes intersecting San Isidro
| ZIP | City | County | Population | Income |
|---|---|---|---|---|
| 78536 | Delmita | Starr County | 345 | $29,327 |
| 78588 | San Isidro | Starr County | 246 | $86,458 |