San Isidro, TX ZIP Codes
2 ZIP codes serve San Isidro, Texas: 78536 and 78588. Together they are home to 660 residents in 184 households. That is more than the 214 people counted inside San Isidro Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $28,393 in 78536 to $94,821 in 78588.
San Isidro Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 214 |
| Households | 86 |
| Median household income | not published |
| Median home value | $47,100 |
| Median age | 51.7 |
| Median rent | not published |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 660 |
| Households (sum of ZIP codes) | 184 |
| Median household income, range across ZIP codes | $28,393 (78536) to $94,821 (78588) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $52,581 |
| Homeowners | 70.7% |
| Households with kids under 18 | 41.3% |
| Moved in the past year | 3.9% |
| Carrier routes in EDDM2GO's route library | 2 routes, 131 homes (2 of 2 ZIP codes) |
Every ZIP code in San Isidro
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 78536 | Delmita | 371 | 117 | $28,393 | — | 73.5% | 35.0% | 7.0% | 1 | 96 | 4% of its land |
| 78588 | San Isidro | 289 | 67 | $94,821 | $52,800 | 65.7% | 52.2% | 0.0% | 1 | 44 | 4% of its land; mailing city |
A ZIP code is listed for San Isidro when at least 10% of its land lies inside the San Isidro Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is San Isidro. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside San Isidro.
Counties
- Starr County — 10 ZIP codes
Price a mailing to San Isidro ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in San Isidro, TX?
- 78536 and 78588. A ZIP code is listed for San Isidro when at least 10% of its land lies inside the San Isidro Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is San Isidro.
- What is the population of San Isidro, TX?
- The Census Bureau counts 214 residents inside San Isidro Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve San Isidro hold 660 residents in all.
- What is the median household income in San Isidro, TX?
- Across its ZIP codes the medians run from $28,393 to $94,821.
- How many carrier routes and mailboxes are in San Isidro, TX?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 2 carrier routes reaching 131 residential and 9 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.