| | Ashland city | 2901902242 | MO | 2902242 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Centralia city (part) | 2901912898 | MO | 2912898 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Clark city (part) | 2901914068 | MO | 2914068 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Columbia city | 2901915670 | MO | 2915670 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Hallsville city | 2901929998 | MO | 2929998 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Harrisburg town | 2901930484 | MO | 2930484 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Hartsburg town | 2901930718 | MO | 2930718 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Huntsdale town | 2901933868 | MO | 2933868 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | McBaine town | 2901944768 | MO | 2944768 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |
| | Pierpont village | 2901957512 | MO | 2957512 | Incorporated Place | Columbia, MO 17860 | Columbia-Moberly-Mexico,
MO 190 | | |