| Ambulance Service | Union Ambulance District | |
| (Emergency) | 911 | |
| (Non-Emergency) | (636) 583-8991 | |
| Police | Union Police Department | |
| (Emergency) | 911 | |
| (Non-Emergency) | (636) 583-3700 | |
| Franklin County | (Emergency) | (636) 583-2567 |
| Missouri State Highway Patrol | (Emergency) | 1-800-525-5555 |
| (Non-Emergency) | (314) 340-4000 | |
| Fire Department | Union Fire Protection Dist. | |
| (Emergency) | 911 | |
| (Non-Emergency) | (636)583-2515 | |
| Hospitals | Missouri Baptist (Sullivan) | (573) 468-4186 |
| Mercy (Washington) | (636) 239-8000 | |
| Poison Hotlines | 1-800-366-8888 | |
| 1-314-772-5200 | ||
| Utilities | ||
| Electric - | ||
| Franklin Co. Dist. Office | 1-800-552-5783 | |
| Washington Dist. Office | (636) 239-4777 | |
| Union Work Headquarters | (636) 583-2535 | |
| Gas - | Ferrellgas | (636) 629-4502 |
| Laclede | (314) 621-6960 | |
| Missouri Natural | (636) 390-2100 | |
| Water - | ||
| City of Union | (636) 583-3522 | |
| American Red Cross St. Louis Area Chapter | (636) 239-4529 | |
| Franklin County Emergency Operations | Abraham Cook | (636) 583-1679 |
