| Place Name | Arroyo Alto |
| Place Type | Unincorporated |
| ZIP Code(s) | 78559 |
| County | Cameron County |
| Area Code(s) | 956 |
| Timezone | Central Standard Time (CST) |
| Population () | |
| Metro/Micro Stats Area | Brownsville-Harlingen, TX |
| US Congressional District(s) | Texas 34th |
| State House Districts | 37 |
| State Senate Districts | 27 |