Starr County, Texas ZIP codes
9 ZIP codes are in Starr County, plus 2 that cross in from neighboring counties. It's part of the Rio Grande City-Roma, TX micro area.
- ZIP codes
- 9
- Population in these ZIPs
- 66,062
- Avg. median income
- $38,200population-weighted
- Cities & towns
- 9
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Starr County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 78536 | Delmita | 371 | $28,393 | — |
| 78545 | Falcon Heights | 392 | $24,550 | — |
| 78547 | Garciasville | 306 | — | — |
| 78548 | Grulla | 1,341 | $37,308 | $54,400 |
| 78582 | Rio Grande City | 44,741 | $42,626 | $150,000 |
| 78584 | Roma | 18,464 | $27,056 | $81,400 |
| 78585 | Salineno | 0 | — | — |
| 78588 | San Isidro | 289 | $94,821 | $52,800 |
| 78591 | Santa Elena | 158 | $35,750 | — |
ZIP codes partly in Starr County
These ZIP codes are mostly in a neighboring county but cover part of Starr County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 78563 | Linn | Hidalgo County | 92 | — | — |
| 78595 | Sullivan City | Hidalgo County | 6,118 | $58,846 | $122,000 |
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 and towns in Starr County
Nearby counties
Frequently asked questions
How many ZIP codes are in Starr County, Texas?
9 ZIP codes are mainly in Starr County, and 2 more ZIP codes from neighboring areas reach partly into it.
What cities are in Starr County?
ZIP codes in Starr County use the city names Delmita, Falcon Heights, Garciasville, Grulla, Rio Grande City, Roma, Salineno, San Isidro and Santa Elena.
What metro area is Starr County in?
Starr County is part of the Rio Grande City-Roma, TX micropolitan statistical area.