| Place Name | Casa Blanca |
| Place Type | Census Designated Place |
| ZIP Code(s) | 78582 |
| County | Starr County |
| Area Code(s) | 956 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 71 |
| Population Growth Rate (2010-19) | 20.37% |
| Metro/Micro Stats Area | Rio Grande City-Roma, TX |
| US Congressional District(s) | Texas 28th |
| State House Districts | 31 |
| State Senate Districts | 21 |