Towns
| State | City/Town | Town Title |
|---|---|---|
| South Dakota | Mc Laughlin | Mc Laughlin, SD |
| South Dakota | Mcintosh | Mcintosh, SD |
| South Dakota | Mclaughlin | Mclaughlin, SD |
| South Dakota | Meadow | Meadow, SD |
| South Dakota | Mellette | Mellette, SD |
| South Dakota | Menno | Menno, SD |
| South Dakota | Midland | Midland, SD |
| South Dakota | Milbank | Milbank, SD |
| South Dakota | Milesville | Milesville, SD |
| South Dakota | Miller | Miller, SD |
| South Dakota | Mission | Mission, SD |
| South Dakota | Mission Hill | Mission Hill, SD |
| South Dakota | Mitchell | Mitchell, SD |
| South Dakota | Mobridge | Mobridge, SD |
| South Dakota | Monroe | Monroe, SD |
| South Dakota | Montrose | Montrose, SD |
| South Dakota | Morristown | Morristown, SD |
| South Dakota | Mound City | Mound City, SD |
| South Dakota | Mount Vernon | Mount Vernon, SD |
| South Dakota | Mud Butte | Mud Butte, SD |
| South Dakota | Murdo | Murdo, SD |
| South Dakota | Nemo | Nemo, SD |
| South Dakota | New Effington | New Effington, SD |
| South Dakota | New Holland | New Holland, SD |
| South Dakota | New Underwood | New Underwood, SD |