| Business | Phone |
| Agriculture & Homemaking Bldg Fairground Homemaking Bldg, Sinton 78387 | (361) 364-6160 |
| San Patricio Probation Dept 404 W Market St, Sinton 78387 | (361) 364-4243 |
| County Commissioner Precinct 1 221 N Scofield St, Sinton 78387 | (361) 364-6170 |
| Data Processing Dept 400 W Sinton St B8, Sinton 78387 | (361) 364-6111 |
| Justice Of Peace Precinct 1 300 N Rachal St, Sinton 78387 | (361) 364-6260 |
| Veterans Service Office 410 W Market St 1, Sinton 78387 | (361) 364-6157 |
| San Patricio County 911 201 E Sinton St, Sinton 78387 | (361) 364-2063 |
| San Patricio County 911 300 N Rachal St, Sinton 78387 | (361) 364-2063 |
| San Patricio County Appraisal 1146 E Market St, Sinton 78387 | (361) 364-5402 |
| San Patricio County Bldg Mntnc 400 W Sinton St, Sinton 78387 | (361) 364-6166 |
| San Patricio County Drainage 701 S San Patricio St, Sinton 78387 | (361) 364-4268 |
| San Patricio County Ext Agent 219 N Vineyard St, Sinton 78387 | (361) 364-6234 |
| San Patricio County Right-Way 400 W Sinton St 109, Sinton 78387 | (361) 364-6122 |
| San Patricio County Surveyor 410 W Market St, Sinton 78387 | (361) 364-2622 |
| San Patricio Voter Rgstrtn 400 W Sinton St 132, Sinton 78387 | (361) 364-6161 |
| Personnel Office 400 W Sinton St B11, Sinton 78387 | (361) 364-6272 |
| Printing Dept 400 W Sinton St 3, Sinton 78387 | (361) 364-6230 |