| Business | Phone |
| San Ygnacio Civic Ctr Us Highway 83 E, San Ygnacio 78067 | (956) 765-8125 |
| San Ygnacio Sub-Station Fm 3169 Rd, San Ygnacio 78067 | (956) 765-4483 |
| Zapata County Justice Of Peace 1103 N Highway 83, San Ygnacio 78067 | (956) 765-5333 |
| Constable's Office 1103 N Highway 83, San Ygnacio 78067 | (956) 765-9610 |