US location post office
ZIP Code 78548
- Zip Code: 78548
- Type: POBox
- Official USPS city name: Grulla
- Official USPS State Code: TX
- Official State Name: Texas
- ZCTA: TRUE
- Population: 627.0
- Density: 61.9
- 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 (15:27 PM Friday, July 25 2025-07-25 (GMT -0500))
- Geo Point: 26.2708, -98.65456
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