| Business | Phone |
| County Commissioners 211 E 3rd St, Montgomery City 63361 | (573) 564-8091 |
| Montgomery County Child Spprt 211 E 3rd St, Montgomery City 63361 | (573) 564-3212 |
| Montgomery County Collector 211 E 3rd St, Montgomery City 63361 | (573) 564-2389 |
| Montgomery County E911 Address 211 E 3rd St, Montgomery City 63361 | (573) 564-2284 |
| Montgomery County Juvenile Ct 211 E 3rd St, Montgomery City 63361 | (573) 564-3750 |
| Montgomery County Probate Ct 211 E 3rd St, Montgomery City 63361 | (573) 564-3348 |
| Montgomery County Recorder 211 E 3rd St, Montgomery City 63361 | (573) 564-3157 |
| Montgomery County Road Shed 480 Benton St, Montgomery City 63361 | (573) 564-2661 |
| Montgomery County Road Shed Highway 161 N, Montgomery City 63361 | (573) 564-2661 |
| University-Missouri Extension 211 E 3rd St, Montgomery City 63361 | (573) 564-3733 |