| Business | Phone |
| County Recorder 1 Courthouse Sq, Monticello 63457 | (573) 767-5440 |
| Lewis County Circuit Clerk Po Box 8, Monticello 63457 | (573) 767-5352 |
| Lewis County Collector 100 E Lafayette, Monticello 63457 | (573) 767-5438 |
| Lewis County Commissioner 100 E Lafayette St, Monticello 63457 | (573) 767-5476 |
| Lewis County Highway Engineer 100 E Lafayette St, Monticello 63457 | (573) 767-5212 |
| Lewis County Juvenile Office 105 E Lafayette, Monticello 63457 | (573) 767-5210 |