| Business | Phone |
| County Inspector-Ossi 306 S La Grange St, Hallettsville 77964 | (361) 798-5310 |
| Lavaca Cnty Ambulance Billing 906 N Texana St, Hallettsville 77964 | (361) 798-4533 |
| Lavaca County Barn Precinct 183s N Promenade St, Hallettsville 77964 | (361) 798-4822 |
| Lavaca County Barn Precinct 4 Fm Rd 531, Hallettsville 77964 | (361) 798-3490 |
| Lavaca County Cntrl Appraisal 113 N Main St, Hallettsville 77964 | (361) 798-4396 |
| Texas Cooperative Extension 312 S La Grange St, Hallettsville 77964 | (361) 798-2221 |
| Lavaca County Justice Of Peace 38 Fm 318, Hallettsville 77964 | (361) 798-3945 |
| Lavaca County Senior Citizens Po Box 531, Hallettsville 77964 | (361) 798-4198 |
| Lavaca Veterans County Svc 306 S La Grange St, Hallettsville 77964 | (361) 798-2101 |