| Business | Phone |
| Cooperative Extension Svc 126 E 3rd St, Mt Vernon 47620 | (812) 838-1331 |
| Posey County Area Plan Comm 126 E 3rd St, Mt Vernon 47620 | (812) 838-1323 |
| Posey County Building Comm 126 E 3rd St # 228, Mt Vernon 47620 | (812) 838-1324 |
| Posey County Commissioners Ofc 331 Walnut St, Mt Vernon 47620 | (812) 838-1311 |
| Posey County Election Board 300 Main St, Mt Vernon 47620 | (812) 838-1339 |
| Posey County Emergency Medical 305 Mill St, Mt Vernon 47620 | (812) 838-1319 |
| Posey County Garage 1203 Odonnell Rd, Mt Vernon 47620 | (812) 838-1334 |
| Posey County Memorial Coliseum 126 E 3rd St, Mt Vernon 47620 | (812) 838-1341 |
| Posey County Recorder 126 E 3rd St, Mt Vernon 47620 | (812) 838-1314 |
| Posey County Surveyor 126 E 3rd St # 37, Mt Vernon 47620 | (812) 838-1340 |
| Posey County Veterans Svc Ofc 126 E 3rd St, Mt Vernon 47620 | (812) 838-8372 |
| Posey County Weather & Road Mt Vernon 47620 | (812) 838-8362 |