| Business | Phone |
| Zapata County Auditor 800 N Us Highway 83, Zapata 78076 | (956) 765-8600 |
| Zapata County Auditors Dept 7 Hidalgo Blvd, Zapata 78076 | (956) 765-9968 |
| Zapata County Tax Collector 600 Hidalgo St, Zapata 78076 | (956) 765-6974 |
| Zapata County Tax Collector 605 N Us Highway 83 H, Zapata 78076 | (956) 765-9971 |
| Zapata County Treasurer 800 N Us Highway 83, Zapata 78076 | (956) 765-9925 |