| Business | Phone |
| Starr County Commissioner 1600 N Corpus Christi, Rio Grande City 78582 | (956) 487-2922 |
| Justice Of The Peace 6165 Fm 1430, Rio Grande City 78582 | (956) 487-7180 |
| Starr County 911 Coordinator 401 N Britton Ave 407, Rio Grande City 78582 | (956) 487-2657 |
| Starr County Alvarez Nutrition Highway 83, Rio Grande City 78582 | (956) 847-1414 |
| Starr County Commissioners 4192 W Us Highway 83, Rio Grande City 78582 | (956) 849-4328 |
| Starr County Juvenile Office 401 N Britton Ave, Rio Grande City 78582 | (956) 487-8512 |
| Starr County Precinct 1 4192 W Us Highway 83, Rio Grande City 78582 | (956) 849-2606 |
| Starr County Veteran's Svc 401 N Britton Ave, Rio Grande City 78582 | (956) 487-5422 |
| Starr County Voters Rgstrtn 401 N Britton Ave 208, Rio Grande City 78582 | (956) 487-4090 |
| Starr County Precinct #3 6163 Fm 1430, Rio Grande City 78582 | (956) 487-2120 |
| San Juan Plaza Svc Ctr 600 N Garza St, Rio Grande City 78582 | (956) 487-2148 |