- Marion County (SC)49
- Marion County, South Carolina, United States36
- Marion Street, Columbia, S.C.1
- Marlboro County (S.C.)3
- Marlboro County (SC)83
- Marlboro County, South Carolina, United States2
- Mart (Tex.)1
- Mayesville, Sumter, S. C., South Carolina, United States4
- McClellancville, Charleston County, South Carolina, United States2
- McClellanville, Charleston County, South Carolina, United States3
- McColl, Marlboro County, South Carolina, United States15
- McConnells (S.C.)1
- McCormick County (SC)17
- McCormick County, South Carolina, United States15
- Meadville (Crawford County, Pa.)1
- Memphis (Tenn.)1
- Mexico1
- Mexico City, Mexico1
- Middletown, Middlesex County, Massachusetts, United States5
- Midlands1