| Mechanic Township, OH (Township) |
| Mechanicsburg, OH (Village) |
| Mechanicsburg, PA (Borough) |
| Mechanicsburg, IL (Village) |
| Mechanicsburg Township, IL (Township) |
| Mechanicsville, IA (City) |
| Mechanicsville, PA (Borough) |
| Mechanicville, NY (City) |
| Mecklenburg County, NC (County) |
| Mecklenburg County, VA (County) |
| Meckling, SD (Township) |
| Mecosta, MI (Village) |
| Mecosta County, MI (County) |
| Mecosta Township, MI (Township) |
| Medary, SD (Township) |
